A 0-day privilege escalation vulnerability (CVE-2026-20245) in Cisco Catalyst SD-WAN Manager that has yet to be patched by Cisco is being leveraged by attackers. “To exploit this vulnerability, an attacker must have netadmin privileges on an affected system. This would require valid credentials or exploitation of CVE-2026-20182 or CVE-2026-20127. Cisco is not aware of successful exploitation by other methods,” the company shared on Thursday. It also said that it has observed “limited cases where the … More → The post Cisco SD-WAN 0-day exploited, no patch available (CVE-2026-20245) appeared first on Help Net Security .

Cisco has patched yet another Catalyst SD-WAN Controller authentication bypass vulnerability (CVE-2026-20182) that has been exploited as a zero-day by “a highly sophisticated cyber threat actor”. About CVE-2026-20182 CVE-2026-20182 – affecting both Cisco Catalyst SD-WAN Controller (the “brain” of the Cisco Catalyst SD-WAN solution) and Cisco Catalyst SD-WAN Manager (the management plane for the entire SD-WAN fabric) – stems from a flawed peering authentication mechanism. It affects both on-prem and cloud deployments. CVE-2026-20182 was reported … More → The post Cisco patches another actively exploited SD-WAN zero-day (CVE-2026-20182) appeared first on Help Net Security .

Cisco Catalyst SD-WAN Controller & Manager contain an authentication bypass vulnerability that allows an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system.