PT-2026-48929 · M2Team · Nanazip
Published
2026-06-12
·
Updated
2026-06-12
·
CVE-2026-47222
CVSS v3.1
5.4
Medium
| Vector | AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L |
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.
Fix
Integer Underflow
Out of bounds Read
Found an issue in the description? Have something to add? Feel free to write us 👾
Related Identifiers
Affected Products
Nanazip