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CVE-2025-46712

Erlang/OTP SSH Has Strict KEX Violations

Published: May 8, 2025Updated: Jan 12, 2026 Sources: CVE List NVD BDUCWE-440
3.7LOW
NVD MITRE
EPSS Score
0.4%
Top 64.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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).

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-440

Affected Products

Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
Ericsson-LG Enterprise Co., Ltd.
commercialaka ericsson lg enterprise co., ltd.
ErlangOn-prem
Communications / voip-telephony
АО «НППКТ»
commercial·RU
ОСОН ОСнова ОnyxOn-premOS
Operating Systems / linux-distro
erlang
oss-projectaka erlang/ssh, otp, erlang/otp
otpLibraryLibrary
OSS Libraries / generic-library

Exploitability

Official Patch Available
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References

https://redos.red-soft.ru/support/secure/uyazvimosti/mnozhestvennye-uyazvimosti-erlang-30102025/?sphrase_id=1339068
redos.red-soft.ru
https://github.com/erlang/otp/releases/tag/OTP-25.3.2.21
github.com
https://github.com/erlang/otp/releases/tag/OTP-26.2.5.12
github.com
and 6 more references View all →
News mentions
Could not load news mentions.

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