Dashboard / CVE-2026-42442

CVE-2026-42442

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 36/100
Published: 2026-05-12 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Auth

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Required
S: Unchanged
C: None
I: None
A: High

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
m2team nanazip 5.0.1250.0 – 6.0.1698.0

References & Advisories (1)

Bug Bounty Relevance

36 / 100
✓ No authentication
✓ Low complexity

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.11%
Raw Score 0.001110
Percentile 1.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00111
2026-10-28
0.00111

Intelligence Sources

nvd ref →

External Links