CVE-2023-41633

MEDIUMNVD 5.55.5—

5.5

Catdoc v0.95 was discovered to contain a NULL pointer dereference via the component xls2csv at src/fileutil.c.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 9.2%
KEV: Not listed

Published

September 1, 2023

Last Modified

February 18, 2026

References (4)

cve@mitrehttps://gist.github.com/rycbar77/3da455382f88cfb6d6798572f34378bd
cve@mitrehttps://rycbar77.github.io/2023/08/29/catdoc-0-95-nullptr-dereference/
af854a3a-2127-422b-91ae-364da2661108https://gist.github.com/rycbar77/3da455382f88cfb6d6798572f34378bd
af854a3a-2127-422b-91ae-364da2661108https://rycbar77.github.io/2023/08/29/catdoc-0-95-nullptr-dereference/

Weakness Classification(1)

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

CWE-476NULL Pointer Dereference

Data Freshness Timeline

(refreshed 17× 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-2023-41633?

CVE-2023-41633 is a medium vulnerability published on September 1, 2023. Catdoc v0.95 was discovered to contain a NULL pointer dereference via the component xls2csv at src/fileutil.c.

When was CVE-2023-41633 disclosed?

CVE-2023-41633 was first published in the National Vulnerability Database on September 1, 2023, with the most recent update on February 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-41633 actively exploited?

CVE-2023-41633 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-41633?

CVE-2023-41633 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2023-41633?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-41633, 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-2023-41633

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-41633?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (4)

Frequently asked(5)

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