Quick answers
- Is CVE-2026-58791 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-58791 being exploited in the wild.
- How severe is CVE-2026-58791?
- Informational severity, published 10 November 2026.
- Which products and versions are affected?
- Google Pixel HWCodec Firmware.
- Is there a fix for CVE-2026-58791?
- 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-2026-58791 attacked?
- It is attacked with local access, in device firmware.
- Am I affected by CVE-2026-58791?
- 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 pic_timing function of the HEVC decoder within Pixel HWCodec firmware, triggered by improper buffer boundary validation during video frame processing. Exploitation requires local access and user interaction to provide or trigger processing of malicious video content. A successful exploit grants privilege escalation to the hardware codec firmware execution context.
Affected products
- Google Pixel HWCodec Firmware
Timeline
- 2026-11-10: disclosed