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CVE Vulnerability Details :
CVE-2026-27711
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-25 Feb, 2026 | 23:44
Updated At-26 Feb, 2026 | 15:07
Rejected At-
▼CVE Numbering Authority (CNA)
NanaZip UFS Archive Parser Memory Corruption via Unvalidated Directory Record Length

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.

Affected Products
Vendor
M2Team
Product
NanaZip
Versions
Affected
  • >= 5.0.1252.0, < 6.0.1638.0
  • >= 6.1, < 6.5.1638.0
Problem Types
TypeCWE IDDescription
CWECWE-125CWE-125: Out-of-bounds Read
Type: CWE
CWE ID: CWE-125
Description: CWE-125: Out-of-bounds Read
Metrics
VersionBase scoreBase severityVector
4.05.1MEDIUM
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
Version: 4.0
Base score: 5.1
Base severity: MEDIUM
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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/M2Team/NanaZip/security/advisories/GHSA-rjwv-4w7x-hc9c
x_refsource_CONFIRM
Hyperlink: https://github.com/M2Team/NanaZip/security/advisories/GHSA-rjwv-4w7x-hc9c
Resource:
x_refsource_CONFIRM
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/M2Team/NanaZip/security/advisories/GHSA-rjwv-4w7x-hc9c
exploit
Hyperlink: https://github.com/M2Team/NanaZip/security/advisories/GHSA-rjwv-4w7x-hc9c
Resource:
exploit
Details not found