# CVE-2026-59594: Pixel HWCodec Firmware heap buffer overflow in encoder

Source: https://junglewise.ai/threats/cve-2026-59594-in-spm-alloc-of-encoder-there-is-a-possible-heap-buffer-overflow  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-59594 · Severity: info · Published 2026-11-10

Google Pixel devices include hardware codec firmware that encodes video and audio. A heap buffer overflow vulnerability in the encoder's memory allocation function could allow a local attacker to escalate privileges and execute arbitrary code on the device.

Technologies: [Google Pixel Devices](https://junglewise.ai/threats/technologies/pixel-devices). Vendors: [Google](https://junglewise.ai/threats/vendors/google).

## Quick answers

**Is CVE-2026-59594 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-59594 being exploited in the wild.

**How severe is CVE-2026-59594?** Informational severity, published 10 November 2026.

**Which products and versions are affected?** Google Pixel Devices devices with security patch level prior to 2026-11-05.

**Is there a fix for CVE-2026-59594?** 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-2026-59594 attacked?** It is attacked with local access, in device firmware.

**Am I affected by CVE-2026-59594?** Check whether you run Google Pixel Devices at an affected version. 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 heap buffer overflow exists in the spm_alloc function of the HWCodec encoder component. The vulnerability requires user interaction for exploitation and local execution privileges, allowing an attacker to overflow a heap buffer and achieve privilege escalation.

## Affected products

- Google Pixel devices devices with security patch level prior to 2026-11-05

## Timeline

- 2026-11-10: disclosed

## References

- [https://source.android.com/docs/security/bulletin/pixel/2026/2026-11-01](https://source.android.com/docs/security/bulletin/pixel/2026/2026-11-01)

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