Erlang vulnerabilities1 known to be exploited.
Erlang has 15 published vulnerabilities across 6 products in our catalogue. 1 of them is on the list of flaws known to be exploited, so criminals are using them now. The most affected product is Erlang/otp, with 12. If you run Erlang software, patch the exploited flaws first.
The most recent Erlang flaw added to the known-exploited list is CVE-2025-32433, on 9 June 2025. We keep watching the known-exploited list.
Which Erlang products have the most vulnerabilities?
Erlang/otp leads with 12 published vulnerabilities. Open a product to see its versions and which of its flaws criminals are already using.
Which Erlang vulnerabilities are being exploited?
1 flaw is on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 10.0Erlang Erlang/OTP SSH Server Missing Authentication for Critical Function Vulnerability
Erlang Erlang/OTP SSH server contains a missing authentication for critical function vulnerability.
Which Erlang flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- 99%
Erlang/OTP is a set of libraries for the Erlang programming language.
- 94%CVE-2023-48795Medium
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...
- 22%CVE-2017-1000385Medium
The Erlang otp TLS server answers with different TLS alerts to different error types in the RSA PKCS #1 1.5 padding.
- 6.8%CVE-2020-13802Critical
Rebar3 versions 3.0.0-beta.3 to 3.13.2 are vulnerable to OS command injection via URL parameter of dependency specification.
- 3.2%CVE-2020-25623High
Erlang/OTP 22.3.x before 22.3.4.6 and 23.x before 23.1 allows Directory Traversal.
- 3.1%CVE-2011-0766High
The random number generator in the Crypto application before 2.0.2.2, and SSH before 2.0.5, as used in the Erlang/OTP ssh library before R14B03, uses predictable seeds based on the current time, which makes it easier...
- 2.2%CVE-2014-1693High
Multiple CRLF injection vulnerabilities in the FTP module in Erlang/OTP R15B03 allow context-dependent attackers to inject arbitrary FTP commands via CRLF sequences in the (1) user, (2) account, (3) cd, (4) ls, (5)...
- 1.9%CVE-2015-2774Medium
Erlang/OTP before 18.0-rc1 does not properly check CBC padding bytes when terminating connections, which makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle attack, a variant...
- 1.8%CVE-2019-1000014High
Erlang/OTP Rebar3 version 3.7.0 through 3.7.5 contains a Signing oracle vulnerability in Package registry verification that can result in Package modifications not detected, allowing code execution.
- 1.5%CVE-2022-37026Critical
In Erlang/OTP before 23.3.4.15, 24.x before 24.3.4.2, and 25.x before 25.0.2, there is a Client Authentication Bypass in certain client-certification situations for SSL, TLS, and DTLS.
All Erlang products we track.
5 products, most vulnerabilities first. Find the ones you run, then open a product to see its versions and exploited flaws.
- Erlang/otperlang\/otp12 vulnerabilities470 versions
- Rebar3rebar32 vulnerabilities65 versions
- Cryptocrypto1 vulnerability27 versions
- Erlangerlang1 vulnerability1 version
- OTPotp0 vulnerabilities2 versions
This directory lists the 5 Erlang products with at least one tracked version, of 6 in our catalogue.
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1 flaw being exploited affects software Acme tracks
Erlang Erlang/OTP SSH server contains a missing authentication for critical function vulnerability. This could allow an attacker to execute arbitrary commands without valid credentials, potentially leading to unauthenticated remote code execution (RCE). By exploiting a flaw in how SSH protocol messages are handled, a malicious actor could gain unauthorized access to affected systems. This vulnerability could affect various products that implement Erlang/OTP SSH server, including: but not limited to: Cisco, NetApp, and SUSE.
- Matched to
- Erlang on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
Our catalogue lists 15 published vulnerabilities across 6 products and 565 versions from Erlang. The most recent Erlang flaw added to the known-exploited list is CVE-2025-32433, on 9 June 2025.
1 Erlang vulnerability is on the list of flaws known to be exploited. The most recently added is CVE-2025-32433. The full list is on this page.
Erlang/otp, with 12 published vulnerabilities. Its own page lists the ones known to be exploited.
Create a Precursor Intelligence account and track the Erlang products you run. We match them against every published flaw, give each one a risk score from 0 to 100 and tell you as soon as we spot one that affects you, by email, in the app or by webhook.