CVE-2026-104935: Ivanti Connect Secure Authentication Bypass by Spoofing Vulnerability
High⚠ Actively exploited (CISA KEV)
High
Severity
Active
CISA KEV
No
Ransomware use
Oct 16, 2026
Patch deadline
⚠ Exploited in the wild. CISA added CVE-2026-104935 to its Known Exploited Vulnerabilities catalog on Oct 13, 2026, with a federal patch deadline of Oct 16, 2026 — meaning attackers are actively using it. If you run the affected software, patch it immediately.
Ivanti Connect Secure contains an authentication bypass by spoofing vulnerability that allows a remote unauthenticated attacker to execute arbitrary commands.
Details
AffectedIvanti · Connect Secure
WeaknessCWE-290
Added to CISA KEVOct 13, 2026
Federal patch deadlineOct 16, 2026
Known ransomware useNot documented
Frequently asked questions
Is CVE-2026-104935 being actively exploited?
Yes — CISA lists CVE-2026-104935 in its Known Exploited Vulnerabilities (KEV) catalog, so it is confirmed exploited in the wild. Patch it as a priority.
What does CVE-2026-104935 affect?
CVE-2026-104935 affects Ivanti · Connect Secure.
How do I fix CVE-2026-104935?
Apply the vendor’s patch for the affected software. The federal patch deadline was Oct 16, 2026. Then check whether your personal data was exposed in any related breach.