CVE-2026-20522 Memory corruption in MediaTek chipset
A missing bounds check in MediaTek chipset firmware allows local attackers to escalate privileges via an out-of-bounds write.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20522?
CVE-2026-20522 is a high-severity memory corruption vulnerability in MediaTek, Inc. MediaTek chipset, published on 5 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In neuropilot, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11249050; Issue ID: MSV-9172.
Weakness: CWE-787
Which versions are affected by CVE-2026-20522?
It affects 8 products.
Products include Mediatek Mt6881 Firmware, Mediatek Mt6993 Firmware, Mediatek Mt8188 Firmware, Mediatek Mt8189 Firmware, Mediatek Mt8668 Firmware, Mediatek Mt8781 Firmware and 2 more.
How do I fix CVE-2026-20522?
No fix has been published for CVE-2026-20522 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-20522 being exploited?
There is no known exploitation of CVE-2026-20522 in the wild and no public exploit code.
Other vulnerabilities in MediaTek, Inc. MediaTek chipset
Sources
Also known as GHSA-49pr-gv6j-5p2c.