CVE-2026-47222

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Source

https://cve.org/CVERecord?id=CVE-2026-47222

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47222.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-47222

Aliases

GHSA-mqqj-crf3-6q37

Published

2026-06-12T16:56:47.501Z

Modified

2026-07-15T01:49:13.660143942Z

Severity

5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L CVSS Calculator

Summary

NanaZip: Heap out-of-bounds read in NanaZip AVB property descriptor parser via unsigned integer underflow

Details

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 valuenumbytes 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.

Database specific

{
    "cwe_ids": [
        "CWE-125",
        "CWE-191"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47222.json",
    "cna_assigner": "GitHub_M"
}

References

Affected packages

Git / github.com/m2team/nanazip

Affected ranges

Type

GIT

Repo

https://github.com/m2team/nanazip

Events

Introduced

626d820c5f48daab54653dec3bc8eba76e976919

Fixed

28b2bc47eaa37f56c670c72401d97fb1178e87b8

Database specific

{
    "extracted_events": [
        {
            "introduced": "3.0.1000.0"
        },
        {
            "fixed": "6.0.1698.0"
        },
        {
            "introduced": "0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

3.*

3.0.1000.0

3.1.1080.0

3.5.1000.0

5.*

5.0.1188.0

5.0.1215.0

5.0.1243.0

5.0.1250.0

5.0.1252.0

5.0.1263.0

5.1.1252.0

5.1.1263.0

6.*

6.0.1461.0

6.0.1621.0

6.0.1630.0

6.0.1632.0

6.0.1638.0

6.0.1650.0

6.0.1691.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47222.json"