CVE-2026-20419 is a denial-of-service vulnerability affecting MediaTek and OpenWrt WLAN AP/STA firmware. An uncaught exception can cause the system to become unresponsive, leading to a remote denial of service without requiring user interaction or additional execution privileges. Rated Medium severity with a CVSS score of 6.5, this vulnerability can be exploited by an adjacent attacker with low attack complexity, resulting in high availability impact. Currently, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 3.6CPE matchmatch criteria | cpe:2.3:a:mediatek:nbiot_sdk:*:*:*:*:*:*:*:* | ||
<= 7.6.7.2CPE matchmatch criteria | cpe:2.3:a:mediatek:software_development_kit:*:*:*:*:*:*:*:* | ||
19.07.0CPE matchmatch criteria | cpe:2.3:o:openwrt:openwrt:19.07.0:-:*:*:*:*:*:* | ||
21.02.0CPE matchmatch criteria | cpe:2.3:o:openwrt:openwrt:21.02.0:-:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.