What is CVE-2026-44215?

CVE-2026-44215 is a medium-severity vulnerability in M2team Nanazip, classified under Out-of-bounds Write. CVSS score: 4.4/10. Published 2026-05-12.

How severe is CVE-2026-44215?

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

Buffer overflow in M2team Nanazip

CVE-2026-44215

NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a one-byte heap out-of-bounds null write exists in the UFS/UFS2 filesystem image parser in NanaZip. The vulnerability is triggered when opening a crafted UFS fil…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (8.2th 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:N/I:L/A:L.

Affected products

M2team Nanazip — versions >= 5.0.1250.0, < 6.0.1698.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

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

Frequently asked questions

What is CVE-2026-44215?: CVE-2026-44215 is a medium-severity vulnerability in M2team Nanazip, classified under Out-of-bounds Write. CVSS score: 4.4/10. Published 2026-05-12.
How severe is CVE-2026-44215?: Medium severity. CVSS v3 base score is 4.4 out of 10.