CVE-2026-42445

Process crash via unbounded UFS directory recursion

Published May 12, 2026 · Updated May 12, 2026

Uncontrolled recursion in NanaZip 5.0.1250.0 and later, before 6.0.1698.0, allows attackers to crash the process via a crafted UFS image. GetAllPaths in NanaZip.Codecs.Archive.Ufs.cpp recursively follows directory entries without a depth limit or visited-inode tracking. Exploitation requires a user to open an untrusted UFS, UFS2, or IMG file and causes process termination without memory corruption or code execution.

CVSS severity3.3
Low
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled recursion in NanaZip 5.0.1250.0 and later, before 6.0.1698.0, allows attackers to crash the process via a crafted UFS image. GetAllPaths in NanaZip.Codecs.Archive.Ufs.cpp recursively follows directory entries without a depth limit or visited-inode tracking. Exploitation requires a user to open an untrusted UFS, UFS2, or IMG file and causes process termination without memory corruption or code execution.

The record

CVE
CVE-2026-42445
Published
May 12, 2026
Updated
May 12, 2026
Vendor
M2-Team
Product
NanaZip
Classifications
CWE-674
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 12, 2026CVE publishedPublication date reported by the CVE source.
  2. May 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 5.0.1250.0, < 6.0.1698.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

M2-Team · NanaZipversion=>= 5.0.1250.0, < 6.0.1698.0

Published CVSS scores

3.3M2-Team GitHub Security AdvisoryCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-674Uncontrolled Recursion

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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