CVE-2026-34353

MEDIUMNVD 5.95.9—

5.9

In OCaml through 4.14.3, Bigarray.reshape allows an integer overflow, and resultant reading of arbitrary memory, when untrusted data is processed.

CVSS v3: 5.9
EG Score: 5.9(medium)
EPSS: 4.2%
KEV: Not listed

Published

March 27, 2026

Last Modified

April 14, 2026

References (2)

cve@mitrehttps://github.com/ocaml/ocaml/issues/14655
cve@mitrehttps://github.com/ocaml/ocaml/pull/14674

Vendor Advisories for CVE-2026-34353(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

CVE-2026-34353
Microsoft Security Response Center (MSRC)Medium
In OCaml through 4.14.3, Bigarray.reshape allows an integer overflow, and resultant reading of arbitrary memory, when untrusted data is processed.

Data Freshness Timeline

(refreshed 16× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-20 20:06 UTCEG score recompute
2026-05-20 20:06 UTCVendor advisory
2026-05-20 20:06 UTCGHSA enrichment
2026-05-20 11:22 UTCepss_batch

Frequently asked(5)

What is CVE-2026-34353?

CVE-2026-34353 is a medium vulnerability published on March 27, 2026. In OCaml through 4.14.3, Bigarray.reshape allows an integer overflow, and resultant reading of arbitrary memory, when untrusted data is processed.

When was CVE-2026-34353 disclosed?

CVE-2026-34353 was first published in the National Vulnerability Database on March 27, 2026, with the most recent update on April 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-34353 actively exploited?

CVE-2026-34353 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-34353?

CVE-2026-34353 has a CVSS v3 base score of 5.9 (NVD).

How do I remediate CVE-2026-34353?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34353, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-34353

Explore →

Is Your Infrastructure Affected by CVE-2026-34353?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2026-34353

📅 Published

🔄 Last Modified

🔗 References (2)

📣 Vendor Advisories for CVE-2026-34353(1)

Data Freshness Timeline

❓ Frequently asked(5)