Openwrt CVE-2026-20408
HIGHCVSS VectorNVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
In wlan, there is a possible out of bounds write due to a heap buffer overflow. 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: WCNCR00461651; Issue ID: MSV-4758.
AnalysisAI
OpenWRT and related SDKs are vulnerable to a heap buffer overflow in the WLAN component that allows adjacent network attackers to execute privilege escalation without user interaction or special permissions. The out-of-bounds write condition enables attackers on the same network segment to gain elevated system privileges. …
Sign in for full analysis, threat intelligence, and remediation guidance.
RemediationAI
Within 24 hours: Identify all affected WLAN equipment in inventory and isolate critical networks from compromised access points; notify all users of temporary access restrictions. Within 7 days: Implement network segmentation to restrict lateral movement, enable enhanced wireless monitoring/logging, and contact vendor for patch timeline or alternative solutions. …
Sign in for detailed remediation steps.
Share
External POC / Exploit Code
Leaving vuln.today