CVE-2023-31102
A public proof of concept exists; no exploitation attested.
- Published2023-11-03
- Fixed in22.01
- WeaknessCWE-191
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
Ppmd7.c in 7-Zip before 23.00 allows an integer underflow and invalid read operation via a crafted 7Z archive.
Timeline
dates in UTC- 2023-11-0304:15CVE publishedNVD
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-31102?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-31102?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 22.1 | < 22.01 | 22.01 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| — | all versions | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| — | all versions | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Rockwell Automation AADvance Trusted SIS Workstation
Rockwell Automation AADvance Trusted SIS Workstation: <=2.00.01
Fix
- Update 7-zip to 22.01
- Vendor fix CISA ICSA-24-256-20 · 1 productAADvance Trusted SIS Workstation: Update to version 2.00.02 or later
- Mitigation from the vendor CISA ICSA-24-256-20 · 1 productRockwell Automation offers users the following solutions:
- Mitigation from the vendor CISA ICSA-24-256-20 · 1 productCustomers using the affected software, who are not able to upgrade to the corrected version, are encouraged to apply security best practices, where possible.
- Mitigation from the vendor CISA ICSA-24-256-20 · 1 productSecurity Best Practices
- Mitigation from the vendor CISA ICSA-24-256-20 · 1 productRockwell Automation Customers using the affected software are encouraged to apply the following additional risk mitigations, if possible:
- Mitigation from the vendor CISA ICSA-24-256-20 · 1 productDo not archive or restore projects from unknown sources.
Advisories and patches
- sourceforge.netRelease Notes
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published
- 2023-11-03
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2023-31102?
Is CVE-2023-31102 actively exploited?
What is the CVSS score for CVE-2023-31102?
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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.