VulnerabilityModified
CVE-2023-31102
Ppmd7.c in 7-Zip before 23.00 allows an integer underflow and invalid read operation via a crafted 7Z archive.
HIGH 7.8EPSS 54.0%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 54.0%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
Ppmd7.c in 7-Zip before 23.00 allows an integer underflow and invalid read operation via a crafted 7Z archive.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 53.99% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-191
- Affected
- 7-zip/7-zip · netapp/active iq unified manager · netapp/oncommand workflow automation
- Source
- cve@mitre.org
EPSS moved from 55.2% on 17 October 2026 to 54.0% on 3 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- https://ds-security.com/post/integer-overflow-in-7-zip-cve-2023-31102/
- https://security.netapp.com/advisory/ntap-20231110-0007/Third Party Advisory
- https://sourceforge.net/p/sevenzip/discussion/45797/thread/713c8a8269/Issue Tracking, Release Notes
- https://www.7-zip.org/download.htmlProduct
- https://www.zerodayinitiative.com/advisories/ZDI-23-1165/Third Party Advisory, VDB Entry
- https://ds-security.com/post/integer-overflow-in-7-zip-cve-2023-31102/
- https://security.netapp.com/advisory/ntap-20231110-0007/Third Party Advisory
- https://sourceforge.net/p/sevenzip/discussion/45797/thread/713c8a8269/Issue Tracking, Release Notes
- https://www.7-zip.org/download.htmlProduct
- https://www.zerodayinitiative.com/advisories/ZDI-23-1165/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.