CVE-2023-37186

HIGHNVD 7.57.5—

7.5

C-blosc2 before 2.9.3 was discovered to contain a NULL pointer dereference in ndlz/ndlz8x8.c via a NULL pointer to memset.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 41.1%
KEV: Not listed

Published

December 25, 2023

Last Modified

April 25, 2025

References (6)

cve@mitrehttps://github.com/Blosc/c-blosc2/commit/d55bfcd6804699e1435dc3e233fd76c8a5d3f9e3
cve@mitrehttps://github.com/Blosc/c-blosc2/compare/v2.9.2...v2.9.3
cve@mitrehttps://github.com/Blosc/c-blosc2/issues/522
af854a3a-2127-422b-91ae-364da2661108https://github.com/Blosc/c-blosc2/commit/d55bfcd6804699e1435dc3e233fd76c8a5d3f9e3
af854a3a-2127-422b-91ae-364da2661108https://github.com/Blosc/c-blosc2/compare/v2.9.2...v2.9.3
af854a3a-2127-422b-91ae-364da2661108https://github.com/Blosc/c-blosc2/issues/522

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-476NULL Pointer Dereference

Data Freshness Timeline

(refreshed 18× 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.

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Frequently asked(5)

What is CVE-2023-37186?

CVE-2023-37186 is a high vulnerability published on December 25, 2023. C-blosc2 before 2.9.3 was discovered to contain a NULL pointer dereference in ndlz/ndlz8x8.c via a NULL pointer to memset.

When was CVE-2023-37186 disclosed?

CVE-2023-37186 was first published in the National Vulnerability Database on December 25, 2023, with the most recent update on April 25, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-37186 actively exploited?

CVE-2023-37186 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 41.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-37186?

CVE-2023-37186 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2023-37186?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-37186, 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

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CVE-2023-37186

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-37186?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (6)

Frequently asked(5)

Related CVEs(same CWE)