CVE-2026-44215
Medium
Description
NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a one-byte heap out-of-bounds null write exists in the UFS/UFS2 filesystem image parser in NanaZip. The vulnerability is triggered when opening a crafted UFS filesystem image. The attacker controls the byte offset of the write within a ~254-byte window past the heap allocation boundary. This vulnerability is fixed in 6.0.1698.0.
SeverityMedium
CVSS4.4
Exploit probability—
ProductM2team Nanazip
PublishedMay 12, 2026
First seenMay 12, 2026
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- m2team nanazip6.0.1698.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| m2team nanazip | 5.0.1252.0 ≤ v < 6.0.1698.0 | 6.0.1698.0 |
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