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.
Published: 2026-09-15
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Remote Code Execution
Action: Immediate Patch
AI Analysis

Impact

In the s_decode_vui_param function of fw_hevc_dec_header.c, a logic error allows an out-of-bounds write. This flaw can be exploited to achieve remote code execution without privilege escalation, and no user interaction is required.

Affected Systems

The vulnerability affects the Android operating system developed by Google. No specific Android version or build information is provided in the advisory, so all current Android releases are potentially impacted until a patch is issued.

Risk and Exploitability

With a CVSS score of 8.8, this flaw is considered high severity. The EPSS score is < 1%, but the lack of a listed KEV indicates it is not currently known to be widely exploited; however, exploitation could be achieved by supplying malicious HEVC-encoded content, making the attack vector remote. The flaw provides an avenue for attackers to execute arbitrary code on the device, compromising confidentiality, integrity, and availability.

Generated by OpenCVE AI on September 17, 2026 at 09:30 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Install the latest Android security patch from Google for your device.
  • If a patch is not yet available, disable HEVC decoding for untrusted media streams until a fix is released.
  • Monitor for and apply any OTA updates from Google promptly.

Generated by OpenCVE AI on September 17, 2026 at 09:30 UTC.

Tracking

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Advisories

No advisories yet.

History

Thu, 17 Sep 2026 10:00:00 +0000

Type Values Removed Values Added
Title Out-of-Bounds Write Exploit "s_decode_vui_param" Enables Remote Code Execution in Android HEVC Decoder

Wed, 16 Sep 2026 00:30:00 +0000

Type Values Removed Values Added
Title Out-of-Bounds Write Exploit "s_decode_vui_param" Enables Remote Code Execution in Android HEVC Decoder

Tue, 15 Sep 2026 21:30:00 +0000

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'}


Tue, 15 Sep 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google android
Vendors & Products Google
Google android

Tue, 15 Sep 2026 18:45:00 +0000

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

cve-icon MITRE

Status: PUBLISHED

Assigner: Google_Devices

Published:

Updated: 2026-09-16T03:57:47.418Z

Reserved: 2026-06-23T16:10:45.837Z

Link: CVE-2026-56920

cve-icon Vulnrichment

Updated: 2026-09-15T20:40:04.718Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-15T19:17:26.730

Modified: 2026-09-16T19:24:44.153

Link: CVE-2026-56920

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-17T09:45:18Z

Weaknesses