Ivanti Connect Secure zero-day exploited in the wild (CVE-2026-104935)

Overview On October 13, 2026, Ivanti published a security advisory for CVE-2026-104935 , a high-severity authentication bypass by spoofing ( CWE-290 ) affecting Ivanti Connect Secure (ICS). The vulnerability has a CVSSv3.0 score of 8.6 and allows a remote, unauthenticated attacker to execute arbitrary commands. Ivanti reports that exploitation in the wild has already occurred prior to disclosure, affecting a limited number of customers. This indicates that exploitation has…