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: WCNCR00406897; Issue ID: MSV-2875.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.008 (55.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000
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
- corp.mediatek.com/product-security-bulletin/April-2025 (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.