7.5

CVE-2025-30211: erlang otp

CVSS: 7.5v3.1HighDeferred
AliasesUBUNTU-CVE-2025-30211USN-7425-1DEBIAN-CVE-2025-30211
Published 28-03-2025Last modified 03-11-2025
Open JSON

Vulnerability summary

CVE-2025-30211 is a high (CVSS 7.5) vulnerability in erlang otp. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 38.6% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.46%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 2
DLA-4132-1DSA-5906-1SUSE-SU-2025:1356-1USN-8901-1

Timeline

  1. 28-03-2025
    PublishedVulnerability first disclosed.
  2. 03-11-2025
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.46%

Chance of exploitation in the next 30 days

Percentile

39%

Versus all other CVEs

30-day change

+0.01 pp

From 0.45% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.46%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • erlang< 1:25.2.3+dfsg-1+deb12u1 | < 1:27.3.1+dfsg-1
Erlang1 product
  • otp< OTP-27.3.1 | < OTP-26.2.5.10 | < OTP-25.3.2.19
Ubuntu1 product
  • erlang< 1:16.b.3-dfsg-1ubuntu2.2+esm3 | < 1:18.3-dfsg-1ubuntu3.1+esm4 | < 1:20.2.2+dfsg-1ubuntu2+esm4 | < 1:27.3+dfsg-1ubuntu1 | < 1:22.2.7+dfsg-1ubuntu0.4 | < 1:24.2.1+dfsg-1ubuntu0.3 | < 1:25.3.2.8+dfsg-1ubuntu4.2

3 vendors · 3 products

References

12 links
Show all 12 references