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CVE-2025-46712

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CVE-2025-46712

Published: May 8, 2025

Modified: Jan 12, 2026

PUBLISHED

CVSS v3.1

3.7

LOW

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).

VendorProductVersions

erlang

otp

affected
>= OTP 27.0, < OTP 27.3.4
affected
>= OTP 26.2.1, < OTP 26.2.5.12
affected
< OTP 25.3.2.21

Weaknesses (CWE)

CWE-440

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

References

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