Buffer overflow in Mediatek Mt7603
CVE-2025-20633
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) code execution with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00400889; Issue ID: MSV-2491.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (23.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Mediatek Mt7603
- Mediatek Mt7615
- Mediatek Mt7622
- Mediatek Mt7915
- Mediatek Software Development Kit
- Mediatek, Inc. Mt7603, Mt7615, Mt7622, Mt7915 — versions SDK release 7.4.0.1 and before
Weakness classification (CWE)
References
- corp.mediatek.com/product-security-bulletin/February-2025 (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-20633?
- CVE-2025-20633 is a high-severity vulnerability in Mediatek Mt7603, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2025-02-03.
- How severe is CVE-2025-20633?
- High severity. CVSS v3 base score is 8.8 out of 10.