PT-2026-40357 · Nanazip · Nanazip

Published 2026-05-12 · Updated 2026-05-18 · CVE-2026-42443

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions NanaZip versions 5.0.1252.0 through 6.0.1697.0

Description An integer divide-by-zero issue exists in the UFS/UFS2 filesystem image parser. This occurs when opening a specially crafted UFS image where the superblock field fs ipg (inodes per cylinder group) is set to zero. The parser uses this value as a divisor without validation, leading to a hardware trap and process crash.

Recommendations Update to version 6.0.1698.0.

Fix

Divide By Zero

Weakness Enumeration

CWE-369

Related Identifiers

CVE-2026-42443

Affected Products

Nanazip

References · 4

• https://github.com/M2Team/NanaZip/security/advisories/GHSA-3x2h-gqqw-g3gm · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42443 · Security Note
• https://twitter.com/CVEnew/status/2054324086982267090 · Twitter Post
• https://t.me/cveNotify/163852 · Telegram Post