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CVE Vulnerability Details :
CVE-2026-47222
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-12 Jun, 2026 | 16:56
Updated At-12 Jun, 2026 | 17:16
Rejected At-
▼CVE Numbering Authority (CNA)
NanaZip: Heap out-of-bounds read in NanaZip AVB property descriptor parser via unsigned integer underflow

NanaZip is the 7-Zip derivative intended for the modern Windows experience. From version 3.0.1000.0 to before version 6.0.1698.0, a heap out-of-bounds read exists in the Android Verified Boot (AVB) vbmeta image parser in NanaZip (via the upstream 7-Zip AvbHandler). An unsigned integer underflow in a bounds check allows an attacker-controlled value_num_bytes field to pass validation, causing AddNameToString to read up to ~4 GiB past the end of a 64 KiB heap buffer. This causes a deterministic crash (denial of service) when opening a crafted .avb or .img file. This issue has been patched in stable version 6.0.1698.0 and preview version 6.5.1742.0.

Affected Products
Vendor
M2Team
Product
NanaZip
Versions
Affected
  • >= 3.0.1000.0, < 6.0.1698.0
Problem Types
TypeCWE IDDescription
CWECWE-125CWE-125: Out-of-bounds Read
CWECWE-191CWE-191: Integer Underflow (Wrap or Wraparound)
Type: CWE
CWE ID: CWE-125
Description: CWE-125: Out-of-bounds Read
Type: CWE
CWE ID: CWE-191
Description: CWE-191: Integer Underflow (Wrap or Wraparound)
Metrics
VersionBase scoreBase severityVector
3.15.4MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Version: 3.1
Base score: 5.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
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-mqqj-crf3-6q37
x_refsource_CONFIRM
Hyperlink: https://github.com/M2Team/NanaZip/security/advisories/GHSA-mqqj-crf3-6q37
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-mqqj-crf3-6q37
exploit
Hyperlink: https://github.com/M2Team/NanaZip/security/advisories/GHSA-mqqj-crf3-6q37
Resource:
exploit
Details not found