CVE-2025-46712
CVE-2025-46712 is a low-severity vulnerability with a CVSS 3.x base score of 3.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-440.
Key facts
- Severity: Low (CVSS 3.x base score 3.7)
- EPSS exploit prediction: 0% (36th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-14034
- Weakness: CWE-440
- Published:
- Last modified:
Description
Erlang/OTP is a set of libraries for the Erlang programming language. In versions prior to OTP-27.3.4 (for OTP-27), OTP-26.2.5.12 (for OTP-26), and OTP-25.3.2.21 (for OTP-25), Erlang/OTP SSH fails to enforce strict KEX handshake hardening measures by allowing optional messages to be exchanged. This allows a Man-in-the-Middle attacker to inject these messages in a connection during the handshake. This issue has been patched in versions OTP-27.3.4 (for OTP-27), OTP-26.2.5.12 (for OTP-26), and OTP-25.3.2.21 (for OTP-25).
Frequently asked questions
- What is CVE-2025-46712?
- Erlang/OTP is a set of libraries for the Erlang programming language. In versions prior to OTP-27.3.4 (for OTP-27), OTP-26.2.5.12 (for OTP-26), and OTP-25.3.2.21 (for OTP-25), Erlang/OTP SSH fails to enforce strict KEX handshake hardening measures by allowing optional messages to be exchanged. This allows a Man-in-the-Middle attacker to inject these messages in a connection during the handshake. This issue has been patched in versions OTP-27.3.4 (for OTP-27), OTP-26.2.5.12 (for OTP-26), and OTP-25.3.2.21 (for OTP-25).
- How severe is CVE-2025-46712?
- CVE-2025-46712 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
- Is CVE-2025-46712 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-46712?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-46712 have an EU (EUVD) identifier?
- Yes. CVE-2025-46712 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-14034.
- When was CVE-2025-46712 published?
- CVE-2025-46712 was published on 2025-05-08 and last updated on 2026-06-17.
References
- https://github.com/erlang/otp/commit/e4b56a9f4a511aa9990dd86c16c61439c828df83
- https://github.com/erlang/otp/releases/tag/OTP-25.3.2.21
- https://github.com/erlang/otp/releases/tag/OTP-26.2.5.12
- https://github.com/erlang/otp/releases/tag/OTP-27.3.4
- https://github.com/erlang/otp/security/advisories/GHSA-934x-xq38-hhqf
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