CVE-2026-20576: MediaTek afe out of bounds write privilege escalation

CVE-2026-20576 · Severity: info · Published 2026-11-02

MediaTek's afe component, used in chipsets across smartphones and IoT devices, contains an out-of-bounds write vulnerability due to missing bounds checking. An attacker who already has System-level privilege can exploit this to escalate privileges further. No user interaction is required for exploitation.

Technologies: MediaTek Afe. Vendors: MediaTek.

Quick answers

Is CVE-2026-20576 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-20576 being exploited in the wild.
How severe is CVE-2026-20576?
Informational severity, published 2 November 2026.
Which products and versions are affected?
MediaTek afe.
Is there a fix for CVE-2026-20576?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-20576 attacked?
It is attacked with local access, in device firmware.
Am I affected by CVE-2026-20576?
Check whether you run MediaTek Afe. 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.

Technical details

An out-of-bounds write flaw exists in afe due to insufficient bounds validation. The vulnerability requires pre-existing System privilege to exploit and does not require user interaction, making it suitable for privilege escalation within a compromised system. A fix is available via Patch ID ALPS11431385.

Affected products

  • MediaTek afe

Timeline

  • 2026-11-02: disclosed

References

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