CVE-2026-27711
NanaZip UFS Archive Parser Memory Corruption via Unvalidated Directory Record Length
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-125 |
| Vendor | m2team |
| Product | nanazip |
| Published | Feb 25, 2026 |
| Last Updated | Feb 26, 2026 |
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Affected Versions
M2Team / NanaZip
>= 5.0.1252.0, < 6.0.1638.0 >= 6.1, < 6.5.1638.0