test_avb_key

Androidビルドへの ほぼ 署名について はじめに NCC Groupのコンサルタントが時折遭遇するエラーとして、Androidビルドが既知の秘密鍵で署名されていることがあります。これにより、セキュアブートが有効なデバイスであっても、デバイスメーカー（ひいてはそのユーザー）は脆弱な状態に置かれます。このブログ記事には2つの目的があります。 この問題についての認識を高めること Androidビルドが（誤って）既知の秘密鍵で署名されていないかを確認するためのクイックチェック用スクリプトを紹介すること...

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 ...

CVE-2026-47222

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...

EUVD-2026-36508

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 ...

CVE-2026-47223

NanaZip (derivative of 7‑Zip) is affected from 3.0.1000.0 up to before 6.0.1698.0. The vulnerability is a heap out‑of‑bounds read in the AVB vbmeta image parser (AvbHandler) caused by a 32‑bit unsigned overflow in the bounds check (pos + ht.salt_len > descSize) that lets an attacker‑controlled...

CVE-2026-47222 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...

PT-2026-48944

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 ...

CVE-2026-47222: Out-of-bounds Read

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...

CVE-2026-47223: Out-of-bounds Read

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 ...

PT-2026-48929

Name of the Vulnerable Software and Affected Versions NanaZip versions 3.0.1000.0 through 6.0.1697.0 Description A heap out-of-bounds read exists in the Android Verified Boot AVB vbmeta image parser via the upstream 7-Zip AvbHandler. An unsigned integer underflow in a bounds check allows an...

CVE-2025-48613

In VBMeta, there is a possible way to modify and resign VBMeta using a test key, assuming the original image was previously signed with the same key. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...

CVE-2025-48613

In VBMeta, there is a possible way to modify and resign VBMeta using a test key, assuming the original image was previously signed with the same key. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...

EUVD-2025-208210

In VBMeta, there is a possible way to modify and resign VBMeta using a test key, assuming the original image was previously signed with the same key. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...

CVE-2025-48613

In VBMeta, there is a possible way to modify and resign VBMeta using a test key, assuming the original image was previously signed with the same key. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...

CVE-2025-48613

The CVE-2025-48613 entry describes a vulnerability in VBMeta where an attacker can modify and resign VBMeta using a test key, assuming the original image was signed with the same key. This could enable local privilege escalation with no additional privileges or user interaction. Connected sources...

CVE-2025-48613

In VBMeta, there is a possible way to modify and resign VBMeta using a test key, assuming the original image was previously signed with the same key. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...

CVE-2025-48613

In VBMeta, there is a possible way to modify and resign VBMeta using a test key, assuming the original image was previously signed with the same key. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...

PT-2026-22668

Name of the Vulnerable Software and Affected Versions VBMeta affected versions not specified Description A flaw exists in VBMeta that may allow modification and resigning of VBMeta images using a test key, provided the original image was signed with the same key. Successful exploitation could lea...

CVE-2025-48613: Improper Privilege Management

In VBMeta, there is a possible way to modify and resign VBMeta using a test key, assuming the original image was previously signed with the same key. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...

ASB-A-416491056

In VBMeta, there is a possible way to modify and resign VBMeta using a test key, assuming the original image was previously signed with the same key. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...