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CVE-2025-26519

Quick assessment

Affected
musl-libc musl
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

musl libc是一款开源的C语言标准库。主要用于嵌入式系统与移动设备等。 musl libc存在安全漏洞，该漏洞源于攻击者触发不可信EUC-KR文本转换，会导致越界写入。

CVSS 8.1 · High EPSS 0.34% · P27

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2025-26519

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
musl libc 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
musl libc是一款开源的C语言标准库。主要用于嵌入式系统与移动设备等。 musl libc存在安全漏洞，该漏洞源于攻击者触发不可信EUC-KR文本转换，会导致越界写入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
musl-libc musl 0.9.13 ~ 1.2.6 -

II. Public POCs for CVE-2025-26519

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III. Intelligence Information for CVE-2025-26519

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Patches & Fixes for CVE-2025-26519 (2)

Mailing List Discussions for CVE-2025-26519 (1)

IV. Related Vulnerabilities

Same product: musl
Same vendor: musl-libc
Same weakness: CWE-787

V. Comments for CVE-2025-26519

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