Cyber Resilience

CVE-2025-20686

High

Published: 08 July 2025

Published
08 July 2025
Modified
09 July 2025
KEV Added
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Patch
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CVSS Score v3.1 8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0028 51.9th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-20686 is a high-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Openwrt Openwrt. Its CVSS base score is 8.8 (High).

Operationally, ranked in the top 48.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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) code execution with no additional execution privileges needed. User interaction is not needed for exploitation. Patch…

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ID: WCNCR00415570; Issue ID: MSV-3404.

CWE(s)
CWE-122

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

mediatek
software development kit
≤ 7.6.7.2
openwrt
openwrt
19.07.0, 21.02.0

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References