CVE-2026-34353
CVE-2026-34353 is a medium-severity vulnerability in Ocaml with a CVSS 3.x base score of 5.9. 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-190.
Key facts
- Severity: Medium (CVSS 3.x base score 5.9)
- EPSS exploit prediction: 0% (2nd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-16555
- Weakness: CWE-190
- Affected product: Ocaml
- Published:
- Last modified:
Description
In OCaml through 4.14.3, Bigarray.reshape allows an integer overflow, and resultant reading of arbitrary memory, when untrusted data is processed.
Frequently asked questions
- What is CVE-2026-34353?
- In OCaml through 4.14.3, Bigarray.reshape allows an integer overflow, and resultant reading of arbitrary memory, when untrusted data is processed.
- How severe is CVE-2026-34353?
- CVE-2026-34353 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2026-34353 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-34353?
- CVE-2026-34353 affects Ocaml. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-34353?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-34353 have an EU (EUVD) identifier?
- Yes. CVE-2026-34353 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16555.
- When was CVE-2026-34353 published?
- CVE-2026-34353 was published on 2026-03-27 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:ocaml:ocaml:*:*:*:*:*:*:*:*
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Browse all CWE-190 (Integer Overflow or Wraparound) vulnerabilities →