CVE-2025-13397
CVE-2025-13397 is a low-severity vulnerability in S-itoc Mruby/c with a CVSS 3.x base score of 3.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-404.
Key facts
- Severity: Low (CVSS 3.x base score 3.3)
- CVSS v2: 1.7
- CVSS v4: 4.8
- EPSS exploit prediction: 0% (3rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-198212
- Weakness: CWE-404
- Affected product: S-itoc Mruby/c
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2025-13397?
- CVE-2025-13397 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
- Is CVE-2025-13397 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-13397?
- CVE-2025-13397 affects S-itoc Mruby/c. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-13397?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-13397 have an EU (EUVD) identifier?
- Yes. CVE-2025-13397 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198212.
- When was CVE-2025-13397 published?
- CVE-2025-13397 was published on 2025-11-19 and last updated on 2026-06-17.
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
- https://vuldb.com/?submit.692130
Affected products (1)
- cpe:2.3:a:s-itoc:mruby\/c:*:*:*:*:*:*:*:*
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