8.1

CVE-2025-26519: musl-libc musl Out-of-bounds Write

CVSS: 8.1v3.1HighAnalyzed
AliasesALPINE-CVE-2025-26519UBUNTU-CVE-2025-26519DEBIAN-CVE-2025-26519
Published 14-02-2025Last modified 14-02-2025
Open JSON

Vulnerability summary

CVE-2025-26519 is a high (CVSS 8.1) Out-of-bounds Write vulnerability in musl-libc musl. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 27.2% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.35%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-02-2025
    PublishedVulnerability first disclosed.
  2. 14-02-2025
    Last modifiedVulnerability information updated.

Description

musl libc 0.9.13 through 1.2.5 before 1.2.6 has an out-of-bounds write vulnerability when an attacker can trigger iconv conversion of untrusted EUC-KR text to UTF-8.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.35%

Chance of exploitation in the next 30 days

Percentile

27%

Versus all other CVEs

30-day change

0.00 pp

From 0.35% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.35%

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

Alpine1 product
  • musl≥ 0.9.13, < 1.2.3-r4 | ≥ 0.9.13, < 1.2.3-r6 | ≥ 0.9.13, < 1.2.4-r3 | ≥ 0.9.13, < 1.2.4_git20230717-r5 | ≥ 0.9.13, < 1.2.5-r1 | ≥ 0.9.13, < 1.2.5-r9 | ≥ 0.9.13, < 1.2.5-r10
Debian1 product
  • muslAll versions (No fix recorded) | < 1.2.5-2
Musl-libc1 product
  • musl≥ 0.9.13, < 1.2.6
Ubuntu1 product
  • muslAll versions (No fix recorded)

4 vendors · 4 products

References

13 links
Show all 13 references