NULL pointer dereference in S-Itoc Mruby\/c
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.001 (3.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000
Affected products
- S-Itoc Mruby\/c
- Mrubyc — versions 3.0, 3.1, 3.2
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/mrubyc/mrubyc/issues/244 (issue-tracking, Issue Tracking)
- github.com/mrubyc/mrubyc/issues/244 (issue-tracking, Issue Tracking)
- github.com/mrubyc/mrubyc/commit/009111904807b8567262036bf45297c3da8f1c87 (Patch, patch)
Frequently asked questions
- What is CVE-2025-13397?
- CVE-2025-13397 is a low-severity vulnerability in S-Itoc Mruby\/c, classified under Improper Resource Shutdown or Release. CVSS score: 3.3/10. Published 2025-11-19.
- How severe is CVE-2025-13397?
- Low severity. CVSS v3 base score is 3.3 out of 10.