Attackers chained three Ivanti zero-days to gain root on fully patched VPN appliances

A threat actor has been using an exploit chain combining three vulnerabilities in Ivanti’s Connect Secure (ICS) appliances to breach organizations, collect credentials, exfiltrate configuration data, and perform network reconnaissance. “In the first week of October 2026, Volexity discovered an unknown threat actor, UTA0576, abusing a zero-day exploit chain to compromise a fully patched (at the time, version 22.8R2.4) Ivanti Connect Secure (ICS) VPN appliance,” Volexity researchers shared on Tues