What is CVE-2026-42446?

CVE-2026-42446 is a medium-severity vulnerability in M2team Nanazip, classified under Out-of-bounds Read. CVSS score: 4.4/10. Published 2026-05-12.

How severe is CVE-2026-42446?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Out-of-bounds Read in M2team Nanazip

CVE-2026-42446

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 filesys…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (2.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L.

Affected products

M2team Nanazip — versions >= 5.0.1250.0, < 6.0.1698.0

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-42446?: CVE-2026-42446 is a medium-severity vulnerability in M2team Nanazip, classified under Out-of-bounds Read. CVSS score: 4.4/10. Published 2026-05-12.
How severe is CVE-2026-42446?: Medium severity. CVSS v3 base score is 4.4 out of 10.