CVE-2025-20735
Unknown Unknown - Not Provided

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Vulnerability report for CVE-2025-20735, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2025-11-04

Last updated on: 2025-11-05

Assigner: MediaTek, Inc.

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 User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00435349; Issue ID: MSV-4051.

CVSS Scores

EPSS Scores

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Meta Information

Published
2025-11-04
Last Modified
2025-11-05
Generated
2026-07-06
AI Q&A
2025-11-04
EPSS Evaluated
2026-07-05
NVD
EUVD

Affected Vendors & Products

Showing 11 associated CPEs
Vendor Product Version / Range
mediatek software_development_kit to 7.6.7.2 (inc)
openwrt openwrt 19.07.0
openwrt openwrt 21.02.0
mediatek mt6890 *
mediatek mt7615 *
mediatek mt7622 *
mediatek mt7663 *
mediatek mt7915 *
mediatek mt7916 *
mediatek mt7981 *
mediatek mt7986 *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

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Executive Summary

This vulnerability is an out of bounds write in the wlan AP driver caused by an incorrect bounds check. It allows an attacker with user execution privileges to escalate their privileges locally without needing any user interaction.

Impact Analysis

The vulnerability can lead to local escalation of privilege, meaning an attacker who already has user-level access could gain higher privileges on the affected system, potentially compromising system security and control.

Mitigation Strategies

Apply the patch identified as WCNCR00435349 provided by the vendor to fix the out of bounds write issue in the wlan AP driver. Since this vulnerability allows local escalation of privilege without user interaction, updating the affected driver as soon as possible is recommended.

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EPSS Chart