🛡️ CVE-2025-12875
🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-119 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A weakness has been identified in mruby 3.4.0. This vulnerability affects the function ary_fill_exec of the file mrbgems/mruby-array-ext/src/array.c. Executing a manipulation of the argument start/length can lead to out-of-bounds write. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. This patch is called 93619f06dd378db6766666b30c08978311c7ec94. It is best practice to apply a patch to resolve this issue.

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE CWE-119
Public Exploit ✅ No
Source NVD
Published 2025-11-07
Updated 2026-06-02
Modified 2026-04-29

Affected Packages

Software From version Fixed in
mruby — —

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