CVE-2026-27711

MEDIUM
2026-02-26 [email protected]
6.6
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
PoC Detected
Feb 27, 2026 - 17:51 vuln.today
Public exploit code
CVE Published
Feb 26, 2026 - 00:16 nvd
MEDIUM 6.6

Tags

Memory Corruption Denial Of Service Nanazip

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.

Analysis

NanaZip versions 5.0.1252.0 through 6.5.1637.0 contain an out-of-bounds memory access flaw in the UFS file parser that can be triggered by opening a malicious .ufs/.ufs2/.img archive file, potentially causing process crashes, hangs, or exploitable heap corruption. Local attackers can exploit this vulnerability through normal file-open operations without elevated privileges, and public exploit code is available. …

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Remediation

Within 30 days: Identify affected systems running version 5.0.1252.0 and and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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Priority Score

53
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +33
POC: +20

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CVE-2026-27711 vulnerability details – vuln.today
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