[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f0qPsOyPeOuaYciOji1vZHNOZWjcXCRK_zLkKuVfsRLY":3},{"success":4,"data":5},true,{"vendor":6,"topVulnerabilitiesByEpss":19,"kevVulnerabilities":80,"topProductsByCves":81,"seoMetadata":83,"meta":92},{"vendorId":7,"vendorName":8,"productCount":9,"cveCount":10,"kevCount":11,"versionCount":12,"lastCveUpdate":13,"firstLetter":14,"products":15,"description":18},17739,"libssh",1,27,0,51,"2025-07-25","l",[16],{"id":17,"product_name":8,"version_count":12,"cve_count":10,"kev_count":11,"last_cve_update":13},103685,"Libssh is a technology vendor with 1 tracked product and 27 known security vulnerabilities. Get comprehensive security analysis, vulnerability tracking, and threat intelligence for this vendor.",[20,29,37,45,49,54,60,64,70,75],{"cveId":21,"description":22,"publishedDate":23,"cvssScore":24,"cvssVersion":25,"severity":26,"isKev":27,"epssScore":28},"CVE-2023-48795","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\u002FOTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org\u002Fx\u002Fcrypto 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.","2023-12-18",5.9,"v3.1","Medium",false,0.93547,{"cveId":30,"description":31,"publishedDate":32,"cvssScore":33,"cvssVersion":34,"severity":35,"isKev":27,"epssScore":36},"CVE-2018-10933","A vulnerability was found in libssh's server-side state machine before versions 0.7.6 and 0.8.4. A malicious client could create channels without first performing authentication, resulting in unauthorized access.","2018-10-17",9.1,"v3.0","Critical",0.91789,{"cveId":38,"description":39,"publishedDate":40,"cvssScore":41,"cvssVersion":42,"severity":43,"isKev":27,"epssScore":44},"CVE-2012-4562","Multiple integer overflows in libssh before 0.5.3 allow remote attackers to cause a denial of service (infinite loop or crash) and possibly execute arbitrary code via unspecified vectors, which triggers a buffer overflow, infinite loop, or possibly some other unspecified vulnerabilities.","2012-11-30",7.5,"v2","High",0.12849,{"cveId":46,"description":47,"publishedDate":40,"cvssScore":41,"cvssVersion":42,"severity":43,"isKev":27,"epssScore":48},"CVE-2012-4560","Multiple buffer overflows in libssh before 0.5.3 allow remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via unspecified vectors.",0.06452,{"cveId":50,"description":51,"publishedDate":40,"cvssScore":52,"cvssVersion":42,"severity":26,"isKev":27,"epssScore":53},"CVE-2012-4559","Multiple double free vulnerabilities in the (1) agent_sign_data function in agent.c, (2) channel_request function in channels.c, (3) ssh_userauth_pubkey function in auth.c, (4) sftp_parse_attr_3 function in sftp.c, and (5) try_publickey_from_file function in keyfiles.c in libssh before 0.5.3 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors.",6.8,0.05176,{"cveId":55,"description":56,"publishedDate":57,"cvssScore":58,"cvssVersion":42,"severity":26,"isKev":27,"epssScore":59},"CVE-2014-8132","Double free vulnerability in the ssh_packet_kexinit function in kex.c in libssh 0.5.x and 0.6.x before 0.6.4 allows remote attackers to cause a denial of service via a crafted kexinit packet.","2014-12-29",5,0.05145,{"cveId":61,"description":62,"publishedDate":40,"cvssScore":58,"cvssVersion":42,"severity":26,"isKev":27,"epssScore":63},"CVE-2012-4561","The (1) publickey_make_dss, (2) publickey_make_rsa, (3) signature_from_string, (4) ssh_do_sign, and (5) ssh_sign_session_id functions in keys.c in libssh before 0.5.3 free \"an invalid pointer on an error path,\" which might allow remote attackers to cause a denial of service (crash) via unspecified vectors.",0.0475,{"cveId":65,"description":66,"publishedDate":67,"cvssScore":68,"cvssVersion":25,"severity":26,"isKev":27,"epssScore":69},"CVE-2021-3634","A flaw has been found in libssh in versions prior to 0.9.6. The SSH protocol keeps track of two shared secrets during the lifetime of the session. One of them is called secret_hash and the other session_id. Initially, both of them are the same, but after key re-exchange, previous session_id is kept and used as an input to new secret_hash. Historically, both of these buffers had shared length variable, which worked as long as these buffers were same. But the key re-exchange operation can also change the key exchange method, which can be based on hash of different size, eventually creating \"secret_hash\" of different size than the session_id has. This becomes an issue when the session_id memory is zeroed or when it is used again during second key re-exchange.","2021-08-31",6.5,0.04683,{"cveId":71,"description":72,"publishedDate":73,"cvssScore":24,"cvssVersion":25,"severity":26,"isKev":27,"epssScore":74},"CVE-2020-16135","libssh 0.9.4 has a NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL.","2020-07-29",0.04105,{"cveId":76,"description":77,"publishedDate":78,"cvssScore":41,"cvssVersion":34,"severity":43,"isKev":27,"epssScore":79},"CVE-2015-3146","The (1) SSH_MSG_NEWKEYS and (2) SSH_MSG_KEXDH_REPLY packet handlers in package_cb.c in libssh before 0.6.5 do not properly validate state, which allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted SSH packet.","2016-04-13",0.03959,[],[82],{"id":17,"product_name":8,"version_count":12,"cve_count":10,"kev_count":11,"last_cve_update":13},{"title":84,"metaDescription":85,"keywords":86,"structuredData":87},"Libssh - Security Vulnerabilities & Analysis | Precursor Intelligence","Comprehensive security analysis for Libssh covering 1 product with 27 tracked vulnerabilities. Real-time threat intelligence, CVE tracking, and security recommendations.","Libssh vulnerabilities, Libssh security, Libssh CVE, Libssh threat intelligence, vendor security analysis, cybersecurity threats, vulnerability management, CVE tracking",{"@context":88,"@type":89,"name":90,"description":85,"url":91},"https:\u002F\u002Fschema.org","Organization","Libssh","https:\u002F\u002Fprecursorintelligence.com\u002Fvendors\u002Flibssh",{"totalProducts":9,"totalVulnerabilities":10,"kevVulnerabilities":11,"lastUpdated":13,"generatedAt":93,"apiVersion":94},"2026-10-17T17:21:40.169Z","3.0"]