Link Following Affecting 7zip package, versions <22.01+really25.01+dfsg-0+deb12u1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ECHOLATEST-7ZIP-17963616
- published14 Jul 2026
- disclosed8 Aug 2025
Introduced: 8 Aug 2025
CVE-2025-55188 (opens in a new tab)How to fix?
Upgrade Echo:latest 7zip to version 22.01+really25.01+dfsg-0+deb12u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream 7zip package and not the 7zip package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
7-Zip before 25.01 does not always properly handle symbolic links during extraction.
References
- https://advisory.echohq.com/cve/CVE-2025-55188
- https://www.cve.org/CVERecord?id=CVE-2025-55188
- https://github.com/ip7z/7zip/compare/25.00...25.01
- https://github.com/ip7z/7zip/releases/tag/25.01
- https://sourceforge.net/p/sevenzip/discussion/45797/thread/da14cd780b/
- https://github.com/lunbun/CVE-2025-55188/
- https://lunbun.dev/blog/cve-2025-55188/
- https://www.openwall.com/lists/oss-security/2025/08/09/1
- https://youtu.be/sWT6M1cfnwM
- 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
- http://www.openwall.com/lists/oss-security/2025/08/09/1
- http://www.openwall.com/lists/oss-security/2025/08/10/1
- http://www.openwall.com/lists/oss-security/2025/08/13/1
- http://www.openwall.com/lists/oss-security/2025/10/12/2
- http://www.openwall.com/lists/oss-security/2025/10/16/7
- https://github.com/lunbun/CVE-2025-55188