Buffer overflow in Mediatek Mt6890
CVE-2025-20654
In wlan service, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID…
Vulnerability class: Buffer Overflow
EPSS: 0.007 (50.3th 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 Mt6890
- Mediatek Mt7622
- Mediatek Mt7915
- Mediatek Mt7916
- Mediatek Mt7981
- Mediatek Mt7986
- Mediatek Software_development_kit
- Mediatek, Inc. Mt6890, Mt7622, Mt7915, Mt7916, Mt7981, Mt7986 — versions SDK version 7.4.0.1 and before (for MT7622 and MT7915) / SDK version 7.6.7.0 and before (for MT7916, MT7981 and MT7986) / OpenWrt 19.07, 21.02 (for MT6890)
- Openwrt — versions 19.07.0, 21.02.0
Weakness classification (CWE)
References
- security@mediatek.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-20654?
- CVE-2025-20654 is a critical-severity vulnerability in Mediatek Mt6890, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2025-04-07.
- How severe is CVE-2025-20654?
- Critical severity. CVSS v3 base score is 9.8 out of 10.