# What is CVE-2023-48795?

> CVE-2023-48795 is a medium-severity flaw (CVSS 5.9) in Net-SSH, published on 18 December 2023. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 94%. If you run an affected version, plan in the vendor’s fix.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2023-48795

## At a glance

- **Verdict:** Fix this soon. Not confirmed as exploited yet, but serious or likely enough that it should not wait for a quiet month.
- **Precursor Intelligence risk score:** 64 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes.
- **Severity:** Medium (CVSS 5.9 out of 10)
- **Known to be exploited:** No, not on the list of flaws known to be exploited today
- **Chance of use in the next 30 days:** 94% (latest exploit-likelihood forecast)
- **Published:** 18 December 2023
- **Record last updated:** 3 November 2025
- **Main product:** Net-SSH
- **Affected products:** 68

## What is CVE-2023-48795? In plain terms

It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can change data.

### The official description

The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in chacha20-poly1305@openssh.com and (if CBC is used) the -etm@openssh.com MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0, Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15, SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3, Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh crate before 0.40.2 for Rust.

### What kind of flaw is it?

- CWE-354: Improper Validation of Integrity Check Value

### How an attack on it works

- Where an attacker can be: Anywhere on the internet
- How hard it is to pull off: Hard: conditions must line up
- Login needed first: No login needed
- Does someone have to click: No, nobody has to do anything
- What an attacker gets: Can change data

Severity vector: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N`

## Is CVE-2023-48795 being exploited? Not that we know of

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 94%. That can change at any time, which is why we keep watching.

Exploit likelihood over the last 7 days: 94%, 94%, 94%, 94%, 94%, 94%, 94%.

### Timeline

- 18 December 2023: Published
- 11 June 2025: Exploit likelihood jumped
- 2 July 2025: Exploit likelihood fell
- 3 November 2025: Record last updated

### How Precursor Intelligence ranks it

CVE-2023-48795 scores **64 out of 100 (Medium)**, with the action "Plan remediation".

Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less:

- Evidence it is being exploited: biggest factor
- How severe it is: strong factor
- How widely exposed it is: smaller factor
- Threat activity around it: smaller factor

85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it.

## Who is affected by CVE-2023-48795?

The published record lists 68 products. Versions are as published: "before 22.3.4.27" means every version up to, but not including, 22.3.4.27.

- [Net-SSH](https://www.precursorintelligence.com/product/net-ssh/net-ssh) by [Net-SSH](https://www.precursorintelligence.com/vendors/net-ssh) (Application): 7.2.0
- Erlang/otp by [Erlang](https://www.precursorintelligence.com/vendors/erlang) (Application): before 22.3.4.27, 23.0 to before 23.3.4.20, 24.0 to before 24.3.4.15, 25.0 to before 25.3.2.8, 26.0 to before 26.2.1
- [SSH](https://www.precursorintelligence.com/product/ssh/ssh) by [SSH](https://www.precursorintelligence.com/vendors/ssh) (Application): before 4.9.1.5, 4.10 to before 4.11.1.7, 4.12 to before 4.13.2.4, 4.14 to before 4.15.3.1, 5.0 to before 5.1.1
- [Openstack Platform](https://www.precursorintelligence.com/product/redhat/openstack_platform) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): 16.1, 16.2, 17.1
- [Advanced Cluster Security](https://www.precursorintelligence.com/product/redhat/advanced_cluster_security) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): 3.0, 4.0
- [Crushftp](https://www.precursorintelligence.com/product/crushftp/crushftp) by [Crushftp](https://www.precursorintelligence.com/vendors/crushftp) (Application): up to 10.6.0, before 10.6.0
- [Enterprise Linux](https://www.precursorintelligence.com/product/redhat/enterprise_linux) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Operating system): 8.0, 9.0
- [Fedora](https://www.precursorintelligence.com/product/fedoraproject/fedora) by [Fedoraproject](https://www.precursorintelligence.com/vendors/fedoraproject) (Operating system): 38, 39
- [Lcos Sx](https://www.precursorintelligence.com/product/lancom-systems/lcos_sx) by [Lancom-Systems](https://www.precursorintelligence.com/vendors/lancom-systems) (Operating system): 4.20, 5.20
- [Asyncssh](https://www.precursorintelligence.com/product/asyncssh_project/asyncssh) by [Asyncssh Project](https://www.precursorintelligence.com/vendors/asyncssh_project) (Application): before 2.14.2
- [Ceph Storage](https://www.precursorintelligence.com/product/redhat/ceph_storage) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): 6.0
- [Cert-Manager Operator for Red Hat Openshift](https://www.precursorintelligence.com/product/redhat/cert-manager_operator_for_red_hat_openshift) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): version not specified
- [Crypto](https://www.precursorintelligence.com/product/golang/crypto) by [Golang](https://www.precursorintelligence.com/vendors/golang) (Application): before 0.17.0
- [Cyclone SSH](https://www.precursorintelligence.com/product/oryx-embedded/cyclone_ssh) by [Oryx-Embedded](https://www.precursorintelligence.com/vendors/oryx-embedded) (Application): before 2.3.4
- [Debian Linux](https://www.precursorintelligence.com/product/debian/debian_linux) by [Debian](https://www.precursorintelligence.com/vendors/debian) (Operating system): 10.0
- [Discovery](https://www.precursorintelligence.com/product/redhat/discovery) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): version not specified
- [Dropbear SSH](https://www.precursorintelligence.com/product/dropbear_ssh_project/dropbear_ssh) by [Dropbear SSH Project](https://www.precursorintelligence.com/vendors/dropbear_ssh_project) (Application): before 2022.83
- [Filezilla Client](https://www.precursorintelligence.com/product/filezilla-project/filezilla_client) by [Filezilla-Project](https://www.precursorintelligence.com/vendors/filezilla-project) (Application): before 3.66.4
- [FreeBSD](https://www.precursorintelligence.com/product/freebsd/freebsd) by [FreeBSD](https://www.precursorintelligence.com/vendors/freebsd) (Operating system): up to 12.4
- [Jboss Enterprise Application Platform](https://www.precursorintelligence.com/product/redhat/jboss_enterprise_application_platform) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): 7.0
- [Jsch](https://www.precursorintelligence.com/product/matez/jsch) by [Matez](https://www.precursorintelligence.com/vendors/matez) (Application): before 0.2.15
- [Keycloak](https://www.precursorintelligence.com/product/redhat/keycloak) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): version not specified
- [Kitty](https://www.precursorintelligence.com/product/9bis/kitty) by [9bis](https://www.precursorintelligence.com/vendors/9bis) (Application): up to 0.76.1.13
- [Lanconfig](https://www.precursorintelligence.com/product/lancom-systems/lanconfig) by [Lancom-Systems](https://www.precursorintelligence.com/vendors/lancom-systems) (Operating system): version not specified
- [Lcos](https://www.precursorintelligence.com/product/lancom-systems/lcos) by [Lancom-Systems](https://www.precursorintelligence.com/vendors/lancom-systems) (Operating system): up to 3.66.4
- [Lcos Fx](https://www.precursorintelligence.com/product/lancom-systems/lcos_fx) by [Lancom-Systems](https://www.precursorintelligence.com/vendors/lancom-systems) (Operating system): version not specified
- [Lcos Lx](https://www.precursorintelligence.com/product/lancom-systems/lcos_lx) by [Lancom-Systems](https://www.precursorintelligence.com/vendors/lancom-systems) (Operating system): version not specified
- [Libssh](https://www.precursorintelligence.com/product/libssh/libssh) by [Libssh](https://www.precursorintelligence.com/vendors/libssh) (Application): before 0.10.6
- [Libssh2](https://www.precursorintelligence.com/product/libssh2/libssh2) by [Libssh2](https://www.precursorintelligence.com/vendors/libssh2) (Application): before 1.11.1
- [macOS](https://www.precursorintelligence.com/product/apple/macos) by [Apple](https://www.precursorintelligence.com/vendors/apple) (Operating system): 14.0 to before 14.4
- [Maverick Synergy Java SSH API](https://www.precursorintelligence.com/product/jadaptive/maverick_synergy_java_ssh_api) by [Jadaptive](https://www.precursorintelligence.com/vendors/jadaptive) (Application): before 3.1.0-snapshot
- [Nova](https://www.precursorintelligence.com/product/panic/nova) by [Panic](https://www.precursorintelligence.com/vendors/panic) (Application): before 11.8
- [Openshift API for Data Protection](https://www.precursorintelligence.com/product/redhat/openshift_api_for_data_protection) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): version not specified
- [Openshift Container Platform](https://www.precursorintelligence.com/product/redhat/openshift_container_platform) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): 4.0
- [Openshift Data Foundation](https://www.precursorintelligence.com/product/redhat/openshift_data_foundation) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): 4.0
- [Openshift Dev Spaces](https://www.precursorintelligence.com/product/redhat/openshift_dev_spaces) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): version not specified
- [Openshift Developer Tools and Services](https://www.precursorintelligence.com/product/redhat/openshift_developer_tools_and_services) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): version not specified
- [Openshift Gitops](https://www.precursorintelligence.com/product/redhat/openshift_gitops) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): version not specified
- [Openshift Pipelines](https://www.precursorintelligence.com/product/redhat/openshift_pipelines) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): version not specified
- [Openshift Serverless](https://www.precursorintelligence.com/product/redhat/openshift_serverless) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): version not specified
- [Openshift Virtualization](https://www.precursorintelligence.com/product/redhat/openshift_virtualization) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): 4
- [OpenSSH](https://www.precursorintelligence.com/product/openbsd/openssh) by [OpenBSD](https://www.precursorintelligence.com/vendors/openbsd) (Application): before 9.6
- [Paramiko](https://www.precursorintelligence.com/product/paramiko/paramiko) by [Paramiko](https://www.precursorintelligence.com/vendors/paramiko) (Application): before 3.4.0
- [Pfsense Ce](https://www.precursorintelligence.com/product/netgate/pfsense_ce) by [Netgate](https://www.precursorintelligence.com/vendors/netgate) (Application): up to 2.7.2
- [Pfsense Plus](https://www.precursorintelligence.com/product/netgate/pfsense_plus) by [Netgate](https://www.precursorintelligence.com/vendors/netgate) (Application): up to 23.09.1
- [Pkixssh](https://www.precursorintelligence.com/product/roumenpetrov/pkixssh) by [Roumenpetrov](https://www.precursorintelligence.com/vendors/roumenpetrov) (Application): before 14.4
- [Proftpd](https://www.precursorintelligence.com/product/proftpd/proftpd) by [Proftpd](https://www.precursorintelligence.com/vendors/proftpd) (Application): up to 1.3.8b
- [Putty](https://www.precursorintelligence.com/product/putty/putty) by [Putty](https://www.precursorintelligence.com/vendors/putty) (Application): before 0.80
- [Russh](https://www.precursorintelligence.com/product/russh_project/russh) by [Russh Project](https://www.precursorintelligence.com/vendors/russh_project) (Application): before 0.40.2
- [Securecrt](https://www.precursorintelligence.com/product/vandyke/securecrt) by [Vandyke](https://www.precursorintelligence.com/vendors/vandyke) (Application): before 9.4.3
- [Security](https://www.precursorintelligence.com/product/gentoo/security) by [Gentoo](https://www.precursorintelligence.com/vendors/gentoo) (Application): version not specified
- [Sftp Gateway Firmware](https://www.precursorintelligence.com/product/thorntech/sftp_gateway_firmware) by [Thorntech](https://www.precursorintelligence.com/vendors/thorntech) (Operating system): before 3.4.6
- [Sftpgo](https://www.precursorintelligence.com/product/sftpgo_project/sftpgo) by [Sftpgo Project](https://www.precursorintelligence.com/vendors/sftpgo_project) (Application): before 2.5.6
- [Single Sign-on](https://www.precursorintelligence.com/product/redhat/single_sign-on) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): 7.0
- [SSH Client](https://www.precursorintelligence.com/product/bitvise/ssh_client) by [Bitvise](https://www.precursorintelligence.com/vendors/bitvise) (Application): before 9.33
- [SSH Server](https://www.precursorintelligence.com/product/bitvise/ssh_server) by [Bitvise](https://www.precursorintelligence.com/vendors/bitvise) (Application): before 9.32
- [Ssh2](https://www.precursorintelligence.com/product/ssh2_project/ssh2) by [Ssh2 Project](https://www.precursorintelligence.com/vendors/ssh2_project) (Application): up to 1.11.0
- [Ssh2](https://www.precursorintelligence.com/product/trilead/ssh2) by [Trilead](https://www.precursorintelligence.com/vendors/trilead) (Application): 6401
- [Sshd](https://www.precursorintelligence.com/product/apache/sshd) by [Apache](https://www.precursorintelligence.com/vendors/apache) (Application): up to 2.11.0
- [Sshj](https://www.precursorintelligence.com/product/apache/sshj) by [Apache](https://www.precursorintelligence.com/vendors/apache) (Application): up to 0.37.0
- [Sshlib](https://www.precursorintelligence.com/product/connectbot/sshlib) by [Connectbot](https://www.precursorintelligence.com/vendors/connectbot) (Application): before 2.2.22
- [Storage](https://www.precursorintelligence.com/product/redhat/storage) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): 3.0
- [Tera Term](https://www.precursorintelligence.com/product/tera_term_project/tera_term) by [Tera Term Project](https://www.precursorintelligence.com/vendors/tera_term_project) (Application): up to 5.1
- [Thrussh](https://www.precursorintelligence.com/product/crates/thrussh) by [Crates](https://www.precursorintelligence.com/vendors/crates) (Application): before 0.35.1
- [Tinyssh](https://www.precursorintelligence.com/product/tinyssh/tinyssh) by [Tinyssh](https://www.precursorintelligence.com/vendors/tinyssh) (Application): up to 20230101
- [Transmit 5](https://www.precursorintelligence.com/product/panic/transmit_5) by [Panic](https://www.precursorintelligence.com/vendors/panic) (Application): before 5.10.4
- [Winscp](https://www.precursorintelligence.com/product/winscp/winscp) by [Winscp](https://www.precursorintelligence.com/vendors/winscp) (Application): before 6.2.2
- [Xshell 7](https://www.precursorintelligence.com/product/netsarang/xshell_7) by [Netsarang](https://www.precursorintelligence.com/vendors/netsarang) (Application): before build__0144

## How do I fix CVE-2023-48795?

1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list.
2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisories and patch notes first in the list.
3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in.
4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood.

### References

- [git.libssh.org](https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.10&id=10e09e273f69e149389b3e0e5d44b8c221c2e7f6) (Patch)
- [github.com](https://github.com/TeraTermProject/teraterm/commit/7279fbd6ef4d0c8bdd6a90af4ada2899d786eec0) (Patch)
- [github.com](https://github.com/connectbot/sshlib/commit/5c8b534f6e97db7ac0e0e579331213aa25c173ab) (Patch)
- [github.com](https://github.com/erlang/otp/blob/d1b43dc0f1361d2ad67601169e90a7fc50bb0369/lib/ssh/doc/src/notes.xml#L39-L42) (Patch)
- [github.com](https://github.com/golang/crypto/commit/9d2ee975ef9fe627bf0a6f01c1f69e8ef1d4f05d) (Patch)
- [github.com](https://github.com/jtesta/ssh-audit/commit/8e972c5e94b460379fe0c7d20209c16df81538a5) (Patch)
- [github.com](https://github.com/mkj/dropbear/blob/17657c36cce6df7716d5ff151ec09a665382d5dd/CHANGES#L25) (Patch)
- [github.com](https://github.com/mscdex/ssh2/commit/97b223f8891b96d6fc054df5ab1d5a1a545da2a3) (Patch)
- [github.com](https://github.com/net-ssh/net-ssh/blob/2e65064a52d73396bfc3806c9196fc8108f33cd8/CHANGES.txt#L14-L16) (Patch)
- [github.com](https://github.com/openssh/openssh-portable/commits/master) (Patch)
- [openwall.com](http://www.openwall.com/lists/oss-security/2023/12/20/3) (Mailing list, Mitigation)
- [github.com](https://github.com/libssh2/libssh2/pull/1291) (Mitigation)
- [packetstormsecurity.com](http://packetstormsecurity.com/files/176280/Terrapin-SSH-Connection-Weakening.html) (Third-party advisory, Vulnerability database)
- [seclists.org](http://seclists.org/fulldisclosure/2024/Mar/21) (Mailing list, Third-party advisory)
- [openwall.com](http://www.openwall.com/lists/oss-security/2023/12/18/3) (Mailing list)
- [openwall.com](http://www.openwall.com/lists/oss-security/2023/12/19/5) (Mailing list)
- [openwall.com](http://www.openwall.com/lists/oss-security/2024/03/06/3) (Mailing list)
- [openwall.com](http://www.openwall.com/lists/oss-security/2024/04/17/8) (Mailing list)
- [access.redhat.com](https://access.redhat.com/security/cve/cve-2023-48795) (Third-party advisory)
- [arstechnica.com](https://arstechnica.com/security/2023/12/hackers-can-break-ssh-channel-integrity-using-novel-data-corruption-attack/) (Press/media coverage)
- [bugs.gentoo.org](https://bugs.gentoo.org/920280) (Issue tracking)
- [bugzilla.redhat.com](https://bugzilla.redhat.com/show_bug.cgi?id=2254210) (Issue tracking)
- [bugzilla.suse.com](https://bugzilla.suse.com/show_bug.cgi?id=1217950) (Issue tracking)
- [crates.io](https://crates.io/crates/thrussh/versions) (Release notes)
- [filezilla-project.org](https://filezilla-project.org/versions.php) (Release notes)
- [forum.netgate.com](https://forum.netgate.com/topic/184941/terrapin-ssh-attack) (Issue tracking)
- [github.com](https://github.com/NixOS/nixpkgs/pull/275249) (Release notes)
- [github.com](https://github.com/PowerShell/Win32-OpenSSH/issues/2189) (Issue tracking)
- [github.com](https://github.com/PowerShell/Win32-OpenSSH/releases/tag/v9.5.0.0p1-Beta) (Release notes)
- [github.com](https://github.com/TeraTermProject/teraterm/releases/tag/v5.1) (Release notes)
- [github.com](https://github.com/advisories/GHSA-45x7-px36-x8w8) (Third-party advisory)
- [github.com](https://github.com/apache/mina-sshd/issues/445) (Issue tracking)
- [github.com](https://github.com/connectbot/sshlib/compare/2.2.21...2.2.22) (Third-party advisory)
- [github.com](https://github.com/cyd01/KiTTY/issues/520) (Issue tracking)
- [github.com](https://github.com/drakkan/sftpgo/releases/tag/v2.5.6) (Release notes)
- [github.com](https://github.com/erlang/otp/releases/tag/OTP-26.2.1) (Release notes)
- [github.com](https://github.com/hierynomus/sshj/issues/916) (Issue tracking)
- [github.com](https://github.com/janmojzis/tinyssh/issues/81) (Issue tracking)
- [github.com](https://github.com/mwiede/jsch/compare/jsch-0.2.14...jsch-0.2.15) (Product)
- [github.com](https://github.com/mwiede/jsch/issues/457) (Issue tracking)
- [github.com](https://github.com/mwiede/jsch/pull/461) (Release notes)
- [github.com](https://github.com/paramiko/paramiko/issues/2337) (Issue tracking)
- [github.com](https://github.com/proftpd/proftpd/blob/0a7ea9b0ba9fcdf368374a226370d08f10397d99/RELEASE_NOTES) (Release notes)
- [github.com](https://github.com/proftpd/proftpd/blob/d21e7a2e47e9b38f709bec58e3fa711f759ad0e1/RELEASE_NOTES) (Release notes)
- [github.com](https://github.com/proftpd/proftpd/blob/master/RELEASE_NOTES) (Release notes)
- [github.com](https://github.com/proftpd/proftpd/issues/456) (Issue tracking)
- [github.com](https://github.com/rapier1/hpn-ssh/releases) (Release notes)
- [github.com](https://github.com/ronf/asyncssh/blob/develop/docs/changes.rst) (Release notes)
- [github.com](https://github.com/ronf/asyncssh/tags) (Release notes)
- [github.com](https://github.com/ssh-mitm/ssh-mitm/issues/165) (Issue tracking)

## Questions

### What is CVE-2023-48795?

CVE-2023-48795 is a medium-severity flaw in Net-SSH, published on 18 December 2023. It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can change data.

### How serious is CVE-2023-48795?

It scores 5.9 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2023-48795 is 64 out of 100, which is Medium. Its action is "Plan remediation". Not confirmed as exploited yet, but serious or likely enough that it should not wait for a quiet month.

### Is CVE-2023-48795 being exploited?

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 94%. That can change at any time, which is why we keep watching.

### Which versions does CVE-2023-48795 affect?

For Net-SSH: 7.2.0. The record lists 68 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2023-48795?

Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet.

## Does CVE-2023-48795 affect you?

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- **We match it to every flaw.** Over 400,000 published flaws, checked against your list.
- **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it.
- **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools.

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