Ivanti Connect Secure VPN Hit by Zero-Day Authentication Bypass Vulnerability CVE-2026-104935
Ivanti has confirmed a serious vulnerability in its Ivanti Connect Secure (ICS) remote access VPN product that enables unauthenticated remote command execution.
The flaw, identified as CVE-2026-104935, was publicly detailed in a security advisory released by the vendor on October 13, 2026. Attackers can exploit the issue without any credentials to run arbitrary commands on affected systems.
Impacted releases include 25.1.2.2, 25.1.1.1, and 22.8R2.4, as well as earlier versions within the same branches. Versions 22.7R2.14 and older are not affected by the vulnerability.
The CVSSv3.0 base score for the issue is rated at 8.6, classifying it as High severity. Ivanti has already observed active exploitation of the zero-day in some customer environments.
The company identified the vulnerability internally through its product security program. A fix was included in the 25.1.3.0 release made available in July 2026.
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