CVE-2026-20463 Privilege escalation in MediaTek chipset
A permissions bypass in MediaTek Modem allows local privilege escalation for attackers with System privileges, requiring a firmware patch.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20463?
CVE-2026-20463 is a medium-severity vulnerability in MediaTek, Inc. MediaTek chipset, published on 1 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In Modem, there is a possible escalation of privilege due to a permissions bypass. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: MOLY01716533; Issue ID: MSV-6309.
Weakness: CWE-280
Which versions are affected by CVE-2026-20463?
How do I fix CVE-2026-20463?
No fix has been published for CVE-2026-20463 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-20463 being exploited?
There is no known exploitation of CVE-2026-20463 in the wild and no public exploit code.
Sources
Also known as GHSA-hq5v-pc42-8w5f.