CVE-2026-20460 Information disclosure in MediaTek chipset
Remote attackers can disclose information via a rogue base station due to improper input validation in MediaTek modem firmware.
- 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-2026-20460?
CVE-2026-20460 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 information disclosure due to improper input validation. This could lead to remote information disclosure, 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: MOLY01811421; Issue ID: MSV-6788.
Weakness: CWE-288
Which versions are affected by CVE-2026-20460?
How do I fix CVE-2026-20460?
Apply the vendor's patch.
Is CVE-2026-20460 being exploited?
There is no known exploitation of CVE-2026-20460 in the wild and no public exploit code.
Sources
Also known as A-509305913, ASB-A-509305913, GHSA-7cqg-gq5x-qr9q, M-MOLY01811421.