CVE-2026-26282

low-risk
Published 2026-02-19

NanaZip is an open source file archive Starting in version 5.0.1252.0 and prior to version 6.0.1630.0, NanaZip has an out-of-bounds heap read in `.NET Single File` bundle header parser due to missing bounds check. Opening a crafted file with NanaZip causes a crash or leaks heap data to the user. Version 6.0.1630.0 patches the issue.

Do I need to act?

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0.02% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.6/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Nanazip

Affected Vendors

M2Team

References (2)

Exploit https://github.com/M2Team/NanaZip/security/advisories/GHSA-ccpc-2222-xv5c
Exploit https://github.com/user-attachments/files/25274143/poc.exe.zip
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal