What is CVE-2025-20666?

CVE-2025-20666 is a high-severity vulnerability in Mediatek Mt2735, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2025-05-05.

How severe is CVE-2025-20666?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Mediatek Mt2735

CVE-2025-20666

In Modem, there is a possible system crash due to an uncaught exception. 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…

EPSS: 0.007 (47.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Mediatek Mt2735
Mediatek Mt6833
Mediatek Mt6833p
Mediatek Mt6853
Mediatek Mt6853t
Mediatek Mt6855
Mediatek Mt6855t
Mediatek Mt6873
Mediatek Mt6875
Mediatek Mt6875t

Weakness classification (CWE)

CWE-617 — Reachable Assertion

References

security@mediatek.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-20666?: CVE-2025-20666 is a high-severity vulnerability in Mediatek Mt2735, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2025-05-05.
How severe is CVE-2025-20666?: High severity. CVSS v3 base score is 7.5 out of 10.