CVE-2026-104935
Ivanti Connect Secure Authentication Bypass by Spoofing Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 16 October 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Authentication bypass by spoofing in ICS before version 25.1.3.0 allows a remote unauthenticated attacker to execute arbitrary commands. This does not impact ICS version 22.7R2.14 or prior.
- CVSS 3.1
- 8.6 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
- EPSS
- 86.77% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 13 October 2026 · due 16 October 2026
- Weakness
- CWE-290
- Affected
- ivanti/connect secure
- Source
- 3c1d8aa1-5a33-4ea4-8992-aadd6440af75
EPSS moved from 26.0% on 14 October 2026 to 86.8% on 26 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
CISA notes
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. https:/forums.ivanti.com/s/article/Security-Advisory-Ivanti-Connect-Secure-CVE-2026-104935 ; https://nvd.nist.gov/vuln/detail/CVE-2026-104935
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.