CVE-2026-56920

HEVC Decoder Out-of-Bounds Write Enables Remote Code Execution

Published Sep 15, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
In s_decode_vui_param of fw_hevc_dec_header.c, there is a possible out-of-bounds write due to a logic error in the code. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:o:google:android:-:*:*:*:*:*:*:*
Type Values Removed Values Added
Title HEVC Decoder Out-of-Bounds Write Enables Remote Code Execution
Type Values Removed Values Added
Title Out-of-Bounds Write Exploit "s_decode_vui_param" Enables Remote Code Execution in Android HEVC Decoder
Type Values Removed Values Added
Title Out-of-Bounds Write Exploit "s_decode_vui_param" Enables Remote Code Execution in Android HEVC Decoder
Type Values Removed Values Added
Weaknesses CWE-787
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Google
Google android
Vendors & Products Google
Google android
Type Values Removed Values Added
Description In s_decode_vui_param of fw_hevc_dec_header.c, there is a possible out-of-bounds write due to a logic error in the code. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Google_Devices
Published
Updated
Sep 16, 2026, 3:57 AM
Reserved
Jun 23, 2026, 4:10 PM
Status
Analyzed
Published
Sep 15, 2026, 7:17 PM
Modified
Sep 21, 2026, 5:18 PM