Is CVE-2025-20739 actively exploited?

CVE-2025-20739 has no public evidence of in-the-wild exploitation as of 2025-11-05.

What is the CVSS score for CVE-2025-20739?

CVE-2025-20739 has a CVSS score of 6.7 (MEDIUM severity). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2025-20739?

Patch guidance is available from mediatek security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-20739.

CVE-2025-20739 - remediation guidance & executive summary

Q: Which products are affected by CVE-2025-20739?

3 products: mediatek software development kit, openwrt openwrt, openwrt openwrt.

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: WCNCR00435340; Issue ID: MSV-4038.

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector: local
Complexity: low
Privileges: high
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-121 CWE-787 · Out-of-bounds Write

Metadata

Primary Vendor: MEDIATEK
Published: 11/4/2025
Last Modified: 11/5/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

mediatek : software_development_kitopenwrt : openwrtopenwrt : openwrt

Remediation Guidance

Executive Summary

Cite this page

CVE-2025-20739. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2025-20739

View on NIST NVD

CVE-2025-20739 vulnerability