Description
7-Zip before 25.01 does not always properly handle symbolic links during extraction.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| 7-Zip | 7-Zip | < 25.01 | 25.01 |
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 | 25.01+dfsg-1 | — |
| Debian 13 | 7zip | 25.01+dfsg-1~deb13u1 | — |
| 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 25.10 | 7zip | No fix yet | — |
| Ubuntu 22.04 LTS | p7zip | No fix yet | — |
| Ubuntu 20.04 LTS | p7zip | No fix yet | — |
| Ubuntu 18.04 LTS | p7zip | No fix yet | — |
| Ubuntu 16.04 LTS | p7zip | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | p7zip | No fix yet | — |
| Ubuntu Pro 24.04 LTS | 7zip | No fix yet | — |
| Ubuntu Pro 22.04 LTS | 7zip | No fix yet | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 2 repositories
-
hunters-sec/CVE-2025-55188-7z-exploit ★ 32 · Aug 11, 2025
7z exploit POC versions prior to 25.01
-
lunbun/CVE-2025-55188 ★ 10 · Aug 28, 2025
Proof-of-concept of CVE-2025-55188: 7-Zip arbitrary file write
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 3
- ICSA-26-181-01 Mitsubishi Electric MELSOFT Update Manager SW1DND-UDM-M CISA ICS & IT advisories · Jun 30, 2026
- 7PAA023732 System 800xA affected by 3rd party component vulnerabilities ABB PSIRT · May 22, 2026
- WID-SEC-2025-1750 7-Zip: Schwachstelle ermöglicht Manipulation von Dateien BSI CERT-Bund (WID) · May 11, 2026
References
- https://sourceforge.net/p/sevenzip/discussion/45797/thread/da14cd780b/
- https://github.com/ip7z/7zip/releases/tag/25.01
- https://github.com/ip7z/7zip/compare/25.00...25.01
- https://www.openwall.com/lists/oss-security/2025/08/09/1
- https://youtu.be/sWT6M1cfnwM
- https://lunbun.dev/blog/cve-2025-55188/
- https://github.com/lunbun/CVE-2025-55188/
- https://www.vicarius.io/vsociety/posts/cve-2025-55188-detect-7-zip-vulnerable-version
- https://www.vicarius.io/vsociety/posts/cve-2025-55188-mitigate-7-zip-vulnerability