CVE-2026-20419In wlan AP/STA firmware, there is a possible system becoming irresponsive due to an uncaught exception.
Updated under an hour ago ()
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It affects mediatek nbiot_sdk and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-754
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
mediatek nbiot_sdk mediatek:nbiot_sdk | through 3.6 | NVD |
mediatek software_development_kit mediatek:software_development_kit | through 7.6.7.2 | NVD |
openwrt openwrt openwrt:openwrt | 19.07.0; 21.02.0 | NVD |
References
- https://corp.mediatek.com/product-security-bulletin/February-2026vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.