CVE-2026-59631: Google Pixel HWCodec Firmware non-heap buffer overflow in HEVC decoder

CVE-2026-59631 · Severity: info · Published 2026-11-10

Google Pixel devices contain a hardware video codec (HWCodec) firmware that decodes H.265/HEVC video streams. A buffer overflow vulnerability in the HEVC decoder could allow a local attacker with access to the device to execute arbitrary code with elevated privileges, potentially compromising device security and user data.

Technologies: Google Pixel HWCodec Firmware. Vendors: Google.

Quick answers

Is CVE-2026-59631 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-59631 being exploited in the wild.
How severe is CVE-2026-59631?
Informational severity, published 10 November 2026.
Which products and versions are affected?
Google Pixel HWCodec Firmware.
Is there a fix for CVE-2026-59631?
Yes: fixed in Pixel security patch level 2026-11-05 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-59631 attacked?
It is attacked with local access, in device firmware.
Am I affected by CVE-2026-59631?
Check whether you run Google Pixel HWCodec Firmware. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: Pixel security patch level 2026-11-05 or later

Technical details

A non-heap buffer overflow exists in the s_inter_rps_pred function of the HEVC decoder in Google Pixel HWCodec Firmware. The vulnerability requires local access and user interaction (e.g., processing a malicious video file) to trigger. Successful exploitation grants privilege escalation to the HWCodec firmware execution context.

Affected products

  • Google Pixel HWCodec Firmware

Timeline

  • 2026-11-10: disclosed

References

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