CVE-2025-12875

LOW EPSS 4.0%
Published Nov 7, 20257mo ago · Modified Jun 17, 20262w ago
1.9 CVSS 4.0
Low
Find Similar
Published Nov 7, 2025 7mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
1.9
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
4.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 2

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
CWE-787 Out-of-bounds Write Memory Safety

Affected Products 1

VendorProductVersionRange
mrubymruby3.4.0any

References 8

  • github.com https://github.com/makesoftwaresafe/mruby/commit/93619f06dd378db6766666b30c08978311c7ec94
    Patch
  • github.com https://github.com/mruby/mruby/
  • github.com https://github.com/mruby/mruby/issues/6650
    Issue Tracking
  • github.com https://github.com/mruby/mruby/issues/6650#event-20443453808
    Issue Tracking
  • github.com https://github.com/mruby/mruby/issues/6650#issuecomment-3430851605
    Patch
  • vuldb.com https://vuldb.com/?ctiid.331511
    Permissions RequiredVDB Entry
  • vuldb.com https://vuldb.com/?id.331511
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/?submit.680879
    Third Party AdvisoryVDB Entry

Remediation

  • github.com https://github.com/makesoftwaresafe/mruby/commit/93619f06dd378db6766666b30c08978311c7ec94
    Patch
  • github.com https://github.com/mruby/mruby/issues/6650#issuecomment-3430851605
    Patch