HOMEVULNERABILITIESCVE-2026-27710
MEDIUM

CVE-2026-27710

CWE-191Published: February 26, 2026· Updated: Feb 27, 2026

5.0
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:2.0th

Official 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 denial-of-service vulnerability exists in NanaZip’s `.NET Single File Application` parser. A crafted bundle can force an integer underflow in header-size calculation and trigger an unbounded memory allocation attempt during archive open. Versions 6.0.1638.0 and 6.5.1638.0 fix the issue.

NVD Source

Technical Analysis

CVE-2026-27710 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.0.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Affected Vendors & Products

m2team1 product
nanazip
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/M2Team/NanaZip/security/advisories/GHSA-89qw-8p49-32wf
ADVISORYhttps://github.com/M2Team/NanaZip/security/advisories/GHSA-89qw-8p49-32wf

All References (2)

→
https://github.com/M2Team/NanaZip/security/advisories/GHSA-89qw-8p49-32wfExploit · Vendor Advisory
→
https://github.com/M2Team/NanaZip/security/advisories/GHSA-89qw-8p49-32wfExploit · Vendor Advisory

Quick Facts

CVE IDCVE-2026-27710
CVSS Score5.0 / 10
SeverityMEDIUM
WeaknessCWE-191
CISA KEVNo
EPSS (30d)0.01%
Affected1 vendor
PublishedFeb 26, 2026

Related CVEs (CWE-191)

CVE-2026-37534
9.8
CVE-2026-33845
9.1
CVE-2026-58016
9.1
CVE-2026-30803
8.8
CVE-2026-34064
8.2
CVE-2026-7424
8.1

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-27710 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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