Description
Ppmd7.c in 7-Zip before 23.00 allows an integer underflow and invalid read operation via a crafted 7Z archive.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | 7zip | 23.01+dfsg-1 | — |
| Debian 13 | 7zip | 23.01+dfsg-1 | — |
| Debian 13 | p7zip | 16.02+transitional.1 | — |
| Debian 12 | 7zip | 22.01+really25.01+dfsg-0+deb12u1 | — |
| Debian 12 | p7zip | 16.02+really25.01+dfsg-0+deb12u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | 7zip | No fix yet | — |
Advisories 4
- 7PAA023732 System 800xA affected by 3rd party component vulnerabilities ABB PSIRT · May 22, 2026
- WID-SEC-2023-2183 7-Zip: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
- VDE-2024-005 TRUMPF: Multiple products contain vulnerable version of 7-zip CERT@VDE · Jun 5, 2025
- ICSA-24-256-20 Rockwell Automation AADvance Trusted SIS Workstation CISA ICS & IT advisories · Sep 12, 2024