What is CVE-2025-20687?

CVE-2025-20687 is a medium-severity vulnerability in Mediatek Mt7902, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2025-07-08.

How severe is CVE-2025-20687?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Out-of-bounds Read in Mediatek Mt7902

CVE-2025-20687

In Bluetooth driver, there is a possible out of bounds read due to an incorrect bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNC…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (4.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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-125 — Out-of-bounds Read

References

security@mediatek.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-20687?: CVE-2025-20687 is a medium-severity vulnerability in Mediatek Mt7902, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2025-07-08.
How severe is CVE-2025-20687?: Medium severity. CVSS v3 base score is 5.5 out of 10.