CVE-2025-20734
Unknown Unknown - Not Provided

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Vulnerability report for CVE-2025-20734, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2025-11-04

Last updated on: 2026-02-26

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 if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: WCNCR00441507; Issue ID: MSV-4112.

CVSS Scores

EPSS Scores

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Meta Information

Published
2025-11-04
Last Modified
2026-02-26
Generated
2026-07-06
AI Q&A
2025-11-04
EPSS Evaluated
2026-07-05
NVD

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 can be exploited locally by a malicious actor who already has System privilege, potentially allowing them to escalate their privileges further. No user interaction is required to exploit this issue.

Impact Analysis

If exploited, this vulnerability could allow a malicious actor with existing System privileges to escalate their privileges further on the affected system. This could lead to unauthorized actions or control over the system components related to the wlan AP driver.

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EPSS Chart