CVE-2025-20736 — Stack-based Buffer Overflow in Software Development KIT

CWE-121 — Stack-based Buffer OverflowCWE-787 — Out-of-bounds Write3 documents3 sources
Severity
6.7MEDIUMNVD
EPSS
0.0%
top 95.41%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mediatek Software Development KITOpenwrt
Timeline
PublishedNov 4

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: WCNCR00435347; Issue ID: MSV-4049.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HExploitability: 0.8 | Impact: 5.9

Affected Packages2 packages

▶NVDopenwrt/openwrt19.07.0, 21.02.0+1

🔴Vulnerability Details

2
GHSA
GHSA-v54w-8g4p-5f5m: In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check↗2025-11-04
▶
CVEList
CVE-2025-20736: In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check↗2025-11-04
▶
CVE-2025-20736 — Stack-based Buffer Overflow | cvebase