Out-of-bounds Read in Mediatek Mt6890
CVE-2025-20690
In wlan AP driver, there is a possible out of bounds read due to an incorrect bounds check. This could lead to local information disclosure with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00418038; Issue ID: MSV-3478.
Vulnerability class: Buffer Overflow
Published · last modified .
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:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (4.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000
Affected products
- Mediatek Mt6890
- Mediatek Mt7615
- Mediatek Mt7622
- Mediatek Mt7663
- Mediatek Mt7915
- Mediatek Mt7916
- Mediatek Mt7981
- Mediatek Mt7986
- Mediatek Software Development Kit
- Mediatek, Inc. Mt6890, Mt7615, Mt7622, Mt7663, Mt7915, Mt7916, Mt7981, Mt7986 — versions SDK release 7.6.7.2 and before / openWRT 19.07, 21.02
Weakness classification (CWE)
References
- corp.mediatek.com/product-security-bulletin/July-2025 (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-20690?
- CVE-2025-20690 is a medium-severity vulnerability in Mediatek Mt6890, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2025-07-08.
- How severe is CVE-2025-20690?
- Medium severity. CVSS v3 base score is 5.5 out of 10.