Is CVE-2026-42446 actively exploited?

No active exploitation of CVE-2026-42446 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42446 be exploited remotely?

No. CVE-2026-42446 requires local access to exploit.

What is the CVSS score of CVE-2026-42446?

CVE-2026-42446 has a CVSS score of 7.1 (HIGH).

HOME VULNERABILITIESCVE-2026-42446

HIGH

CVE-2026-42446

CWE-125Published: May 12, 2026· Updated: May 14, 2026

7.1

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.0th

Official Description

NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a stack-based out-of-bounds read exists in the ZealFS filesystem image parser in NanaZip. The vulnerability is triggered when opening a crafted ZealFS v1 filesystem image. An attacker-controlled BitmapSize field in the file header drives an unbounded loop that reads past the end of a stack-allocated ZEALFS_V1_HEADER structure. This vulnerability is fixed in 6.0.1698.0.

NVD Source

Technical Analysis

CVE-2026-42446 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 7.1.