CVE-2025-46712 - CVE House
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Status published Low CVE-2025-46712

Erlang/OTP SSH Has Strict KEX Violations

Vulnerability 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).

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

otp
Vulnerable Versions:
>= OTP 27.0, < OTP 27.3.4, >= OTP 26.2.1, < OTP 26.2.5.12, < OTP 25.3.2.21

Timeline

Official Publish: May 8th, 2025
Last Modified: January 12th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Weaknesses (CWE)

CWE-440

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.