What is the CVSS score of CVE-2025-26519?

CVE-2025-26519 has a CVSS 3.1 base score of 8.1 (High). CVSS vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L. EPSS exploitation probability: 0.0%.

Which versions of Musl are affected by CVE-2025-26519?

Organizations using musl libc 0.9.13 through 1.2.5 before 1.2.6 face notable risk from CVE-2025-26519, a out-of-bounds write vulnerability rated CVSS 8.1.. A patch is available.

How to fix or mitigate CVE-2025-26519?

Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

Musl CVE-2025-26519

HIGH

Out-of-bounds Write (CWE-787)

2025-02-14 cve@mitre.org

Buffer Overflow Memory Corruption Musl

8.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.1 HIGH

AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:26 vuln.today

Patch released

Mar 28, 2026 - 18:26 nvd

Patch available

CVE Published

Feb 14, 2025 - 04:15 nvd

HIGH 8.1

DescriptionCVE.org

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.

AnalysisAI

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. Rated high severity (CVSS 8.1), this vulnerability is no authentication required.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. 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. Affected products include: Musl-Libc Musl. Version information: through 1.2.5.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).