CVE-2025-46712

Erlang/OTP SSH Has Strict KEX Violations

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).

Category

3.7
CVSS
Severity: Low
CVSS 3.1 •
EPSS 0.04%
Affected: erlang otp
Published at:
Updated at:

References

Link Tags
https://github.com/erlang/otp/security/advisories/GHSA-934x-xq38-hhqf
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

Frequently Asked Questions

What is the severity of CVE-2025-46712?
CVE-2025-46712 has been scored as a low severity vulnerability.
How to fix CVE-2025-46712?
To fix CVE-2025-46712, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-46712 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-46712 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-46712?
CVE-2025-46712 affects erlang otp.
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