CVE-2026-56997
Received Received - Intake

Out-of-Bounds Write in AV1 Decoder Library

Publication date: 2026-09-15

Last updated on: 2026-09-18

Assigner: Google Devices

Description
In Av1DecodeFrameTag of vp9hwd_headers.cc, there is a possible out-of-bounds write due to a missing bounds check. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

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Meta Information

Published
2026-09-15
Last Modified
2026-09-18
Generated
2026-10-06
AI Q&A
2026-09-16
EPSS Evaluated
2026-10-04
NVD
CVE-2026-56997
EUVD
EUVD-2026-78989

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
google android *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.

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Executive Summary

This vulnerability is an out-of-bounds write issue in the Av1DecodeFrameTag function of the vp9hwd_headers.cc file. It occurs due to a missing bounds check, which could allow an attacker to write data outside the intended memory region.

Impact Analysis

This vulnerability could allow remote attackers to escalate privileges on affected systems. Exploitation does not require user interaction or additional execution privileges, making it particularly dangerous.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches due to remote escalation of privilege, which may violate compliance requirements under GDPR (data protection) and HIPAA (health data security). Unauthorized access risks exposing sensitive data, triggering regulatory penalties.

Mitigation Strategies

Update the affected software to the latest version that includes a patch for this vulnerability. Monitor vendor advisories for patches and apply them promptly.

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