ShellCodeX Intelligence Brief
CRITICAL
Vulnerabilities
Cisco SD-WAN zero-day CVE-2026-20245 reportedly exploited months pre-patch
Source headline: Cisco SD-WAN Zero-Day Exploited Months Before Patching
Threat level
Critical
Signal strength
85/100
Source confidence
1 source
Published
5 hours ago
Intelligence Summary
A Cisco SD-WAN vulnerability tracked as CVE-2026-20245 was reportedly exploited for months before public disclosure and patching. The issue is part of a wider series of Cisco SD-WAN flaws identified in 2026. If attackers could reach vulnerable devices, exploitation could enable unauthorized access or other harmful outcomes. The delay between exploitation and remediation increases the window of exposure for unpatched systems. Network operators should verify whether their SD-WAN deployments are affected and apply the available patch or mitigation guidance immediately.
Recommended Action
Prioritize immediate review, validate exposure, and patch or mitigate affected systems.
Topics
Original reporting
SecurityWeek
Cisco SD-WAN Zero-Day Exploited Months Before Patching
Open original source