CVE-2025-30211
March 28, 2025
Erlang/OTP is a set of libraries for the Erlang programming language. Prior to versions OTP-27.3.1, 26.2.5.10, and 25.3.2.19, a maliciously formed KEX init message can result with high memory usage. Implementation does not verify RFC specified limits on algorithm names (64 characters) provided in KEX init message. Big KEX init packet may lead to inefficient processing of the error data. As a result, large amount of memory will be allocated for processing malicious data. Versions OTP-27.3.1, OTP-26.2.5.10, and OTP-25.3.2.19 fix the issue. Some workarounds are available. One may set option "parallel_login" to "false" and/or reduce the "max_sessions" option.
Affected Packages
https://github.com/erlang/otp.git (GITHUB):
Affected version(s) >=OTP-17.0 <OTP-25.3.2.19Fix Suggestion:
Update to version OTP-25.3.2.19https://github.com/erlang/otp.git (GITHUB):
Affected version(s) >=OTP-27.0 <OTP-27.3.1Fix Suggestion:
Update to version OTP-27.3.1https://github.com/erlang/otp.git (GITHUB):
Affected version(s) >=OTP-26.0 <OTP-26.2.5.10Fix Suggestion:
Update to version OTP-26.2.5.10Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Memory Allocation with Excessive Size Value
EPSS
Base Score:
0.46
