CVE-2023-31102

HIGHNVD 7.87.8—Weaponized

7.8

Ppmd7.c in 7-Zip before 23.00 allows an integer underflow and invalid read operation via a crafted 7Z archive.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 98.1%
KEV: Not listed

Published

November 3, 2023

Last Modified

November 21, 2024

References (10)

cve@mitrehttps://ds-security.com/post/integer-overflow-in-7-zip-cve-2023-31102/
cve@mitrehttps://security.netapp.com/advisory/ntap-20231110-0007/
cve@mitrehttps://sourceforge.net/p/sevenzip/discussion/45797/thread/713c8a8269/
cve@mitrehttps://www.7-zip.org/download.html
cve@mitrehttps://www.zerodayinitiative.com/advisories/ZDI-23-1165/
af854a3a-2127-422b-91ae-364da2661108https://ds-security.com/post/integer-overflow-in-7-zip-cve-2023-31102/
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20231110-0007/
af854a3a-2127-422b-91ae-364da2661108https://sourceforge.net/p/sevenzip/discussion/45797/thread/713c8a8269/
af854a3a-2127-422b-91ae-364da2661108https://www.7-zip.org/download.html
af854a3a-2127-422b-91ae-364da2661108https://www.zerodayinitiative.com/advisories/ZDI-23-1165/

Weakness Classification(1)

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

CWE-191Integer Underflow

Data Freshness Timeline

(refreshed 12× in last 7d / 18× 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.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-24 14:33 UTCEG score recompute
2026-05-24 14:33 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-31102?

CVE-2023-31102 is a high vulnerability published on November 3, 2023. Ppmd7.c in 7-Zip before 23.00 allows an integer underflow and invalid read operation via a crafted 7Z archive.

When was CVE-2023-31102 disclosed?

CVE-2023-31102 was first published in the National Vulnerability Database on November 3, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-31102 actively exploited?

CVE-2023-31102 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-31102?

CVE-2023-31102 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2023-31102?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-31102, 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-2023-31102

📅 Published

🔄 Last Modified

🔗 References (10)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-31102?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (10)

Frequently asked(5)

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