CVE-2025-20720 — Heap-based Buffer Overflow in Software Development KIT

CWE-122 — Heap-based Buffer OverflowCWE-787 — Out-of-bounds Write3 documents3 sources
Severity
8.8HIGHNVD
EPSS
0.0%
top 91.08%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mediatek Software Development KITOpenwrt
Timeline
PublishedOct 14

Description

In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00418954; Issue ID: MSV-3569.

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages2 packages

▶NVDopenwrt/openwrt19.07.0, 21.02.0+1

🔴Vulnerability Details

2
GHSA
GHSA-35xv-2qm4-86w9: In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check↗2025-10-14
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CVEList
CVE-2025-20720: In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check↗2025-10-14
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CVE-2025-20720 — Heap-based Buffer Overflow | cvebase