NanaZip is an open source file archive. Starting in version 5.0.1252.0 and prior to versions 6.0.1638.0 and 6.5.1638.0, a memory corruption vulnerability in NanaZip’s UFS parser allows a crafted `.ufs/.ufs2/.img` file to trigger out-of-bounds memory access during archive open/listing. The bug is reachable via normal user file-open flow and can cause process crash, hang, and potentially exploitable heap corruption. Versions 6.0.1638.0 and 6.5.1638.0 fix the issue.

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History

Fri, 27 Feb 2026 18:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:m2team:nanazip:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 6.6, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H'}


Fri, 27 Feb 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 26 Feb 2026 13:30:00 +0000

Type Values Removed Values Added
First Time appeared M2team
M2team nanazip
Vendors & Products M2team
M2team nanazip

Thu, 26 Feb 2026 00:00:00 +0000

Type Values Removed Values Added
Description NanaZip is an open source file archive. Starting in version 5.0.1252.0 and prior to versions 6.0.1638.0 and 6.5.1638.0, a memory corruption vulnerability in NanaZip’s UFS parser allows a crafted `.ufs/.ufs2/.img` file to trigger out-of-bounds memory access during archive open/listing. The bug is reachable via normal user file-open flow and can cause process crash, hang, and potentially exploitable heap corruption. Versions 6.0.1638.0 and 6.5.1638.0 fix the issue.
Title NanaZip UFS Archive Parser Memory Corruption via Unvalidated Directory Record Length
Weaknesses CWE-125
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-26T15:07:47.597Z

Reserved: 2026-02-23T17:56:51.203Z

Link: CVE-2026-27711

cve-icon Vulnrichment

Updated: 2026-02-26T15:07:35.012Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-26T00:16:24.843

Modified: 2026-02-27T17:51:29.583

Link: CVE-2026-27711

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-26T13:10:31Z

Weaknesses