CVE-2026-27114Public exploit

Application hang via circular ROMFS offset chain

Published Feb 19, 2026 · Updated Feb 19, 2026

Starting with 5.0.1252.0, denial of service in NanaZip before 6.0.1630.0 allows attackers to hang the application via a crafted ROMFS file. The GetAllPaths function follows each untrusted ROMFS header NextOffset in a while loop without tracking visited offsets or capping iterations, so a circular chain never terminates. Opening the crafted archive is required, and the resulting infinite loop permanently hangs the NanaZip process without reported data disclosure or modification.

CVSS severity5.1
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Starting with 5.0.1252.0, denial of service in NanaZip before 6.0.1630.0 allows attackers to hang the application via a crafted ROMFS file. The GetAllPaths function follows each untrusted ROMFS header NextOffset in a while loop without tracking visited offsets or capping iterations, so a circular chain never terminates. Opening the crafted archive is required, and the resulting infinite loop permanently hangs the NanaZip process without reported data disclosure or modification.

The record

CVE
CVE-2026-27114
Published
Feb 19, 2026
Updated
Feb 19, 2026
Vendor
M2-Team
Product
NanaZip
Classifications
CWE-835, T1204.002
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Feb 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 5.0.1252.0, < 6.0.1630.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

M2-Team · NanaZipversion=>= 5.0.1252.0, < 6.0.1630.0

Published CVSS scores

5.1GitHub, Inc.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
7.5NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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