Vulnerability Description
NanaZip is an open source file archive. Starting in version 5.0.1252.0 and prior to versions 6.0.1638.0 and 6.5.1638.0, a memory corruption vulnerability in NanaZip’s UFS parser allows a crafted `.ufs/.ufs2/.img` file to trigger out-of-bounds memory access during archive open/listing. The bug is reachable via normal user file-open flow and can cause process crash, hang, and potentially exploitable heap corruption. Versions 6.0.1638.0 and 6.5.1638.0 fix the issue.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| M2Team | Nanazip | >= 5.0.1252.0, < 6.0.1638.0 |
Related Weaknesses (CWE)
References
- https://github.com/M2Team/NanaZip/security/advisories/GHSA-rjwv-4w7x-hc9cExploitVendor Advisory
- https://github.com/M2Team/NanaZip/security/advisories/GHSA-rjwv-4w7x-hc9cExploitVendor Advisory
FAQ
What is CVE-2026-27711?
CVE-2026-27711 is a vulnerability with a CVSS score of 6.6 (MEDIUM). NanaZip is an open source file archive. Starting in version 5.0.1252.0 and prior to versions 6.0.1638.0 and 6.5.1638.0, a memory corruption vulnerability in NanaZip’s UFS parser allows a crafted `.ufs...
How severe is CVE-2026-27711?
CVE-2026-27711 has been rated MEDIUM with a CVSS base score of 6.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-27711?
Check the references section above for vendor advisories and patch information. Affected products include: M2Team Nanazip.