Buffer overflow in Mediatek Mt6990
CVE-2025-20712
In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not need…
Vulnerability class: Buffer Overflow
EPSS: 0.003 (18.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Mediatek Mt6990
- Mediatek Mt7990
- Mediatek Mt7991
- Mediatek Mt7992
- Mediatek Mt7993
- Mediatek Software_development_kit
- Mediatek, Inc. Mt6990, Mt7990, Mt7991, Mt7992, Mt7993 — versions SDK release 8.3.1.1 and before / OpenWrt 21.02, 23.05 (MT6990)
- Openwrt — versions 21.02.0, 23.05
Weakness classification (CWE)
References
- security@mediatek.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-20712?
- CVE-2025-20712 is a high-severity vulnerability in Mediatek Mt6990, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2025-10-14.
- How severe is CVE-2025-20712?
- High severity. CVSS v3 base score is 8.8 out of 10.