CVE-2026-42442

3.3 LOW

NanaZip is an open source file archive

Published: 2026-05-12 · Last updated: 2026-05-18

Severity and scoring

CVSS: 3.3 LOW
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CWE: CWE-476

Affected products

Vendor	Product
m2team	nanazip

Description

NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a null-pointer dereference exists in the UFS/UFS2 filesystem image parser in NanaZip. The vulnerability is triggered when opening a crafted UFS image where the root inode (inode 2) is set to IFLNK (symlink) instead of IFDIR (directory). The parser unconditionally treats the root inode as a directory without checking its type, and when the symlink has an embedded target (small di_size), the directory data buffer is zero-length, causing a null-pointer dereference on the first read. This vulnerability is fixed in 6.0.1698.0.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-42442
[Vendor advisory]https://github.com/M2Team/NanaZip/security/advisories/GHSA-8r4x-fx3w-ph77

Related CVEs

Same vendor

CVE-2026-42444 — NanaZip is an open source file archive (3.3 LOW)
CVE-2026-42443 — NanaZip is an open source file archive (3.3 LOW)
CVE-2026-42355 — NanaZip is an open source file archive (3.3 LOW)

Same CWE

CVE-2026-53463 — ImageMagick is free and open-source software used for editing and manipulating digital images (4.3 MEDIUM)
CVE-2026-24716 — A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions
CVE-2026-22899 — A NULL pointer dereference vulnerability has been reported to affect File Station 6
CVE-2025-66281 — A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions
CVE-2025-62850 — A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions