M2Team NanaZip up to 5.0.1252.0/6.0.1638.0/6.5.1638.0 UFS Parser .ufs/.ufs2/.img out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in M2Team NanaZip up to 5.0.1252.0/6.0.1638.0/6.5.1638.0. Affected is an unknown function of the file .ufs/.ufs2/.img of the component UFS Parser. The manipulation results in out-of-bounds. This vulnerability is cataloged as CVE-2026-27711. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in M2Team NanaZip up to 5.0.1252.0/6.0.1638.0/6.5.1638.0. It has been classified as problematic. Affected is some unknown functionality of the file .ufs/.ufs2/.img of the component UFS Parser. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-27711 since 02/23/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

Upgrading to version 6.0.1638.0 or 6.5.1638.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-8769). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.6
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: NanaZip 6.0.1638.0/6.5.1638.0

Timelineinfo

02/23/2026 CVE reserved
02/26/2026 +3 days Advisory disclosed
02/26/2026 +0 days VulDB entry created
03/01/2026 +3 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-rjwv-4w7x-hc9c
Status: Confirmed

CVE: CVE-2026-27711 (🔒)
GCVE (CVE): GCVE-0-2026-27711
GCVE (VulDB): GCVE-100-347874
EUVD: 🔒

Entryinfo

Created: 02/26/2026 01:23
Updated: 03/01/2026 10:41
Changes: 02/26/2026 01:23 (69), 02/26/2026 05:16 (1), 03/01/2026 10:41 (12)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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