Buffer overflow in Mediatek Mt7902
CVE-2025-20728
In wlan STA driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00447115; Issue ID: MSV-4276.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.001 (2.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.5% 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: 0.001 · change: 0.000
Affected products
- Mediatek Mt7902
- Mediatek Mt7920
- Mediatek Mt7921
- Mediatek Mt7922
- Mediatek Mt7925
- Mediatek Mt7927
- Mediatek Software Development Kit — versions 3.7
- Mediatek, Inc. Mt7902, Mt7920, Mt7921, Mt7922, Mt7925, Mt7927 — versions NB SDK release 3.7 and before
Weakness classification (CWE)
References
- corp.mediatek.com/product-security-bulletin/November-2025 (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-20728?
- CVE-2025-20728 is a high-severity vulnerability in Mediatek Mt7902, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2025-11-04.
- How severe is CVE-2025-20728?
- High severity. CVSS v3 base score is 7.8 out of 10.