CVE-2026-20419
Medium
Description
In wlan AP/STA firmware, there is a possible system becoming irresponsive due to an uncaught exception. This could lead to remote (proximal/adjacent) denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00461663 / WCNCR00463309; Issue ID: MSV-4852.
SeverityMedium
CVSS6.5
Exploit probability—
ProductMediatek Nbiot Sdk
PublishedFeb 2, 2026
First seenFeb 2, 2026
Weakness typeCWE-754CWE-754
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mediatek nbiot_sdk | v ≤ 3.6 | — |
| mediatek software_development_kit | v ≤ 7.6.7.2 | — |
| openwrt openwrt | 19.07.0, 21.02.0 | — |
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