CVE-2025-20762 Denial of service in MediaTek chipset
Remote attackers can cause system crashes in MediaTek chipsets by connecting devices to rogue base stations, requiring no user interaction or privileges.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-20762?
CVE-2025-20762 is a medium-severity denial of service vulnerability in MediaTek, Inc. MediaTek chipset, published on 6 Jan 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 system crash due to incorrect error handling. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01685181; Issue ID: MSV-4760.
Weakness: CWE-617
Which versions are affected by CVE-2025-20762?
It affects 1 product.
Products include Mediatek Nr17.
How do I fix CVE-2025-20762?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-20762 being exploited?
There is no known exploitation of CVE-2025-20762 in the wild and no public exploit code.
Other vulnerabilities in MediaTek, Inc. MediaTek chipset
Sources
Also known as A-457246938, ASB-A-457246938, GHSA-r9f8-ghwp-vf63, M-MOLY01685181.