The US Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2026-104935, a Ivanti Connect Secure Authentication Bypass by Spoofing Vulnerability, to its Known Exploited Vulnerabilities (KEV) catalog on October 13, 2026. CISA adds a flaw to the catalog when it has reliable evidence that attackers are exploiting it in the wild.
What CISA says
Ivanti Connect Secure contains an authentication bypass by spoofing vulnerability that allows a remote unauthenticated attacker to execute arbitrary commands.
— CISA KEV catalog entry for CVE-2026-104935
Key facts
| CVE | CVE-2026-104935 |
|---|---|
| Vendor / product | Ivanti Connect Secure |
| Added to KEV | October 13, 2026 |
| Federal deadline | October 16, 2026 |
| Known ransomware use | Unknown |
| Weakness (CWE) | CWE-290 |
| CISA forensic triage | No |
Who has to act, and by when
US federal civilian executive branch agencies are required to remediate the vulnerability by October 16, 2026. CISA urges all organizations to prioritize KEV-listed flaws as part of their vulnerability management.
CISA’s required action for this entry:
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
References
- CISA Known Exploited Vulnerabilities Catalog https://www.cisa.gov/known-exploited-vulnerabilities-catalog
- NIST NVD — CVE-2026-104935 https://nvd.nist.gov/vuln/detail/CVE-2026-104935