🛡️ CVE-2025-26519 on Alpine 3.15 (Root.io) — musl

🟠 CVSS 8.0 — High ✅ No Known Exploit OSV

8.0

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

CVE-2025-26519 in musl - Patched by Root

Root has patched CVE-2025-26519 in the musl package for Root:Alpine:3.15. Multiple fixed versions available.

Distribution advisory

This page covers CVE-2025-26519 as tracked by Alpine 3.15 (Root.io), for the package musl. The fix is available in version 1.2.2-r90071; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

ROOT-OS-ALPINE-315-CVE-2025-26519 is classified as CWE-787: Out-of-bounds Write. Data is written past the end or before the start of a buffer, corrupting whatever is stored there.

Affected software

ROOT-OS-ALPINE-315-CVE-2025-26519 is recorded against 2 packages.

musl (fixed in 1.2.2-r90071)
rootio-musl (fixed in 1.2.2-r90071)

Timeline and source

Published on 7 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

CVE-2025-26519 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Alpine BellSoft Base record Debian Ubuntu

Details

Severity HIGH

CVSS Score 8.0

CVSS Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2026-08-07

Updated 2026-08-12

Modified 2026-08-07

Fix URL N/A

Affected Packages

Software	From version	Fixed in
musl	—	1.2.2-r90071
rootio-musl	—	1.2.2-r90071

References

N/A

🔗 NVD 🔗 Mitre

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