What is CVE-2025-20680?

CVE-2025-20680 is a critical-severity vulnerability in Mediatek Mt7902, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2025-07-08.

How severe is CVE-2025-20680?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Mediatek Mt7902

CVE-2025-20680

In Bluetooth driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation. Patch I…

Vulnerability class: Buffer Overflow

EPSS: 0.007 (46.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Mediatek Mt7902
Mediatek Mt7920
Mediatek Mt7921
Mediatek Mt7922
Mediatek Mt7925
Mediatek Mt7927
Mediatek Nbiot_sdk
Mediatek, Inc. Mt7902, Mt7920, Mt7921, Mt7922, Mt7925, Mt7927 — versions NB SDK release 3.6 and before

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

security@mediatek.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-20680?: CVE-2025-20680 is a critical-severity vulnerability in Mediatek Mt7902, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2025-07-08.
How severe is CVE-2025-20680?: Critical severity. CVSS v3 base score is 9.8 out of 10.