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    CVE-2026-47223

    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). A 32-bit unsigned integer overflow in the bounds check pos + ht.salt_len > descSize allows an attacker-controlled salt_len field to bypass validation, causing CByteBuffer::CopyFrom to memcpy up to ~4 GiB past the end of a 64. This issue has been patched in stable version 6.0.1698.0 and preview version 6.5.1742.0.

    Published:Jun 12, 2026
    Last Modified:Jun 13, 2026
    EPS:Jun 12, 2026
    EPSS Score:0.00046
    CVSS Score:5.4

    Affected Products

    Vendor
    M2team
    Product
    Nanazip

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers
    CAPEC-92 Forced Integer Overflow

    Related CVEs

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    CVE-2026-55782 (CVSS 2.4) — NanaZip is the 7-Zip derivative intended for the modern Windows experience. Prior to 6.5.1749.0, NanaZip's Web…
    CVE-2026-47224 (CVSS 4.3) — NanaZip is the 7-Zip derivative intended for the modern Windows experience. From version 3.0.1000.0 to before …
    CVE-2026-47222 (CVSS 5.4) — NanaZip is the 7-Zip derivative intended for the modern Windows experience. From version 3.0.1000.0 to before …
    CVE-2026-44215 (CVSS 4.4) — NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a one-byte heap out-of-bounds nu…
    CVE-2026-42445 (CVSS 3.3) — NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, an uncontrolled recursion vulner…
    CVE-2026-42444 (CVSS 3.3) — NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a denial-of-service vulnerabilit…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High