CVE-2025-20632
Published: 03 February 2025
Summary
CVE-2025-20632 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Mediatek Software Development Kit. Its CVSS base score is 7.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 24.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly mitigates the out-of-bounds write vulnerability by requiring timely application of the specific patch WCNCR00397139 to the wlan AP driver.
Addresses the root cause of incorrect bounds check by enforcing validation of all inputs to the wlan AP driver to prevent out-of-bounds writes.
Provides memory protection mechanisms such as DEP and ASLR to mitigate exploitation of the out-of-bounds write for local privilege escalation.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Local out-of-bounds write in wlan driver directly enables exploitation for privilege escalation (T1068).
NVD Description
In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch…
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ID: WCNCR00397139; Issue ID: MSV-2188.
Deeper analysisAI
CVE-2025-20632 is a vulnerability in the wlan AP driver that enables an out-of-bounds write due to an incorrect bounds check. This issue, tracked as CWE-787 with Issue ID MSV-2188, affects MediaTek components and carries a CVSS v3.1 base score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
A local attacker requires only low privileges to exploit this vulnerability, which has low attack complexity and needs no user interaction or additional execution privileges. Exploitation can lead to local escalation of privilege, resulting in high impacts to confidentiality, integrity, and availability.
MediaTek's February 2025 product security bulletin provides mitigation details, including Patch ID WCNCR00397139. Security practitioners should consult https://corp.mediatek.com/product-security-bulletin/February-2025 and apply the patch to vulnerable systems.
Details
- CWE(s)