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).
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:HAttack ComplexityHigh
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:LIntegrityLow
A:NAvailabilityNone
Weaknesses
Affected Products
Сообщество свободного программного обеспечения
oss-projectaka fsf
ООО «Ред Софт»
commercial·RUaka red soft
Ericsson-LG Enterprise Co., Ltd.
commercialaka ericsson lg enterprise co., ltd.
АО «НППКТ»
commercial·RU
erlang
oss-projectaka erlang/otp, otp, erlang/ssh
Exploitability
Official Patch Available
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 →
Unlock Complete Vulnerability Intelligence
Get the full picture for CVE-2025-46712 and every CVE in our database. Create a free account — no credit card required.
Create Free AccountPlain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows