CVE-2025-13397

low-risk

Published 2025-11-19

A security vulnerability has been detected in mrubyc up to 3.4. This impacts the function mrbc_raw_realloc of the file src/alloc.c. Such manipulation of the argument ptr leads to null pointer dereference. An attack has to be approached locally. The name of the patch is 009111904807b8567262036bf45297c3da8f1c87. It is advisable to implement a patch to correct this issue.

Do I need to act?

0.02% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 3.3/10 Low

LOCAL / LOW complexity

Affected Products (1)

Mruby\/C

Affected Vendors

S-Itoc

References (6)

Patch https://github.com/mrubyc/mrubyc/commit/009111904807b8567262036bf45297c3da8f1c87

Issue Tracking https://github.com/mrubyc/mrubyc/issues/244

Issue Tracking https://github.com/mrubyc/mrubyc/issues/244#issuecomment-3400382026

Permissions Required https://vuldb.com/?ctiid.332925

Third Party Advisory https://vuldb.com/?id.332925

Third Party Advisory https://vuldb.com/?submit.692130

/ 100

low-risk

Severity 13/34 · Low

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal