This site currently shows sample data for demonstration.
BDVDB
বাংলা

Vulnerabilities

CVE-2026-47222 | BDVDB-2026-339985 Detail

M2TeamNanaZip

Description#

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.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact low. Attack vector: network.

Weaknesses#

  • CWE-125 Out-of-bounds Read
  • CWE-191 Integer Underflow (Wrap or Wraparound)

References#

Exploit#

No public exploit known

History#

  1. Version 1Record published in the CVE List.