CVE-2025-13397

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.

CVSS 4.0

4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-25)

CWEs

CWE-404, CWE-476

Published

2025-11-19

Modified

2026-10-19

Record from

the NVD, synced 2026-10-19

Affected

• s-itoc:mruby\/c

References

• https://github.com/mrubyc/mrubyc/commit/009111904807b8567262036bf45297c3da8f1c87
• https://github.com/mrubyc/mrubyc/issues/244
• https://github.com/mrubyc/mrubyc/issues/244#issuecomment-3400382026
• https://vuldb.com/?ctiid.332925
• https://vuldb.com/?id.332925

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