CVE-2025-20748 Details
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 if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: WCNCR00432679; Issue ID: MSV-3950.
A vulnerability has been identified in the MediaTek WLAN Access Point (AP) driver, where an out-of-bounds write can occur due to an improper bounds check. This flaw could potentially lead to local privilege escalation, but requires that the attacker already has system privileges. The vulnerability does not require user interaction to be exploited.
A patch for this vulnerability has been issued, and can be applied by following the instructions provided in the MediaTek November 2025 Product Security Bulletin.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Nov 5, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://corp.mediatek.com/product-security-bulletin/November-2025 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
| CWE-787 | Out-of-bounds Write | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mediatek software development kit | <= 7.6.7.2 |
CPE
Remediation
| |
| openwrt openwrt | 19.07.0 - 21.02.0 - |
CPE
Remediation
| |
| mediatek mt6890 | All versions |
CPE
Remediation
| |
| mediatek mt7615 | All versions |
CPE
Remediation
| |
| mediatek mt7622 | All versions |
CPE
Remediation
| |
| mediatek mt7663 | All versions |
CPE
Remediation
| |
| mediatek mt7915 | All versions |
CPE
Remediation
| |
| mediatek mt7916 | All versions |
CPE
Remediation
| |
| mediatek mt7981 | All versions |
CPE
Remediation
| |
| mediatek mt7986 | All versions |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jan 13, 2026 | CVE Modified | [email protected] |
| Nov 5, 2025 | Initial Analysis | [email protected] |
| Nov 4, 2025 | CVE Modified | CISA-ADP |
| Nov 4, 2025 | New CVE Received | [email protected] |