CVE-2026-20571: MediaTek afe use-after-free memory corruption

CVE-2026-20571 · Severity: info · Published 2026-11-02

MediaTek's afe component contains a use-after-free memory corruption vulnerability that could allow privilege escalation. An attacker who has already obtained system-level access could exploit this flaw without user interaction to elevate their privileges further on affected devices.

Technologies: MediaTek Afe. Vendors: MediaTek.

Quick answers

Is CVE-2026-20571 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-20571 being exploited in the wild.
How severe is CVE-2026-20571?
Informational severity, published 2 November 2026.
Which products and versions are affected?
MediaTek afe.
Is there a fix for CVE-2026-20571?
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-2026-20571 attacked?
It is attacked with local access, in device firmware.
Am I affected by CVE-2026-20571?
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

A use-after-free vulnerability in the afe component allows local privilege escalation. The vulnerability requires the attacker to already have system privilege; exploitation does not require user interaction. This memory corruption could be leveraged to execute arbitrary code at a higher privilege level.

Affected products

  • MediaTek afe

Timeline

  • 2026-11-02: disclosed

References

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