{"id":"CVE-2026-104935","published":"2026-10-13T16:17:11Z","modified":"2026-10-13T19:24:36Z","title":"Ivanti Connect Secure Authentication Bypass by Spoofing Vulnerability","vendor":"Ivanti","product":"Connect Secure","tier":"core","eol":null,"description":{"text":"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.","provenance":"source","from":"NVD"},"summary":{"text":"Ivanti Connect Secure contains an authentication bypass by spoofing flaw in the product's authentication component, affecting versions before 25.1.3.0. Ivanti Connect Secure versions 22.7R2.14 and earlier are not affected. A remote attacker with no authentication or user interaction can execute arbitrary commands by spoofing their way past authentication.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:12:45Z"},"cvss":{"score":8.6,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","provenance":"source","from":"NVD"},"epss":{"score":0.86766,"percentile":0.99742,"date":"2026-10-31","provenance":"source"},"kev":{"dateAdded":"2026-10-13","dueDate":"2026-10-16","ransomware":false,"requiredAction":"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.","notes":"https:/forums.ivanti.com/s/article/Security-Advisory-Ivanti-Connect-Secure-CVE-2026-104935 ; https://nvd.nist.gov/vuln/detail/CVE-2026-104935","provenance":"source"},"vulncheckKev":{"dateAdded":"2026-10-13","exploitedFirstSeen":"2026-10-13","ransomware":false,"evidence":[{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2026-10-13"},{"url":"https://www.volexity.com/blog/2026/10/13/a-series-of-unauthenticated-events-chained-exploitation-of-ivanti-connect-secure-zero-days/","date":"2026-10-13"},{"url":"https://x.com/DefusedCyber/status/2110040892572602788","date":"2026-10-13"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-10-22&host_type=src&vulnerability=cve-2026-104935","date":"2026-10-22"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-10-23&host_type=src&vulnerability=cve-2026-104935","date":"2026-10-23"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-10-24&host_type=src&vulnerability=cve-2026-104935","date":"2026-10-24"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-10-25&host_type=src&vulnerability=cve-2026-104935","date":"2026-10-25"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-10-26&host_type=src&vulnerability=cve-2026-104935","date":"2026-10-26"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-10-27&host_type=src&vulnerability=cve-2026-104935","date":"2026-10-27"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-10-28&host_type=src&vulnerability=cve-2026-104935","date":"2026-10-28"}],"evidenceTotal":12,"provenance":"source"},"exploited":true,"otx":null,"cwes":[{"id":"CWE-290","name":"Authentication Bypass by Spoofing"}],"references":[{"url":"https://hub.ivanti.com/s/article/Security-Advisory-Ivanti-Connect-Secure-CVE-2026-104935","tags":["Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-104935","tags":["US Government Resource"]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: remote unauthenticated attacker exploits public-facing appliance","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"Authentication bypass by spoofing in ICS before version 25.1.3.0 allows a remote unauthenticated attacker","start":0,"end":105}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: arbitrary command execution after bypass","mappingType":"primary_impact","evidence":[{"from":"description","quote":"allows a remote unauthenticated attacker to execute arbitrary commands","start":65,"end":135}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-98816","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-98816","exploited":true,"exploitedSince":"2026-10-13","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":5,"skipped":0,"earliest":"2026-10-13","earliestUrl":"https://github.com/ApexBreach/CVE-2026-104935-Proof-of-concept","repos":[{"name":"ApexBreach/CVE-2026-104935-Proof-of-concept","url":"https://github.com/ApexBreach/CVE-2026-104935-Proof-of-concept","stars":1,"created":"2026-10-13"},{"name":"0x45dd/ivanti-cve-2026-104935-check","url":"https://github.com/0x45dd/ivanti-cve-2026-104935-check","stars":1,"created":"2026-10-15"},{"name":"maxprog-svg/CVE-2026-104935","url":"https://github.com/maxprog-svg/CVE-2026-104935","stars":0,"created":"2026-10-22"},{"name":"Bluefire-Redteam-Cybersecurity/bluefire-ivanti-ics-guard","url":"https://github.com/Bluefire-Redteam-Cybersecurity/bluefire-ivanti-ics-guard","stars":0,"created":"2026-10-22"},{"name":"CompleteTech-Security/ivanti-connect-secure-cve-2026-104935-check","url":"https://github.com/CompleteTech-Security/ivanti-connect-secure-cve-2026-104935-check","stars":0,"created":"2026-10-23"}]},"nuclei":[{"id":"CVE-2026-104935","name":"Ivanti Connect Secure <= 22.8R2.4 - Authentication Bypass via X-DSCGI-PATH Header","severity":"critical","path":"http/cves/2026/CVE-2026-104935.yaml","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-104935.yaml"}],"first":{"date":"2026-10-13","source":"PoC-in-GitHub","url":"https://github.com/ApexBreach/CVE-2026-104935-Proof-of-concept"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1190"],"provenance":"ai"},{"stage":"primary","techniques":["T1059"],"provenance":"ai"}],"timeline":[{"date":"2026-10-13","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-104935","provenance":"source"},{"date":"2026-10-13","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub","url":"https://github.com/ApexBreach/CVE-2026-104935-Proof-of-concept","provenance":"source"},{"date":"2026-10-13","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","provenance":"source"},{"date":"2026-10-13","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2026-10-13","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-98816","provenance":"source"}],"speed":{"daysToPublicExploit":0,"firstExploitFrom":"PoC-in-GitHub","daysToKev":0},"priority":{"score":76.0,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":10.0,"detail":"added 19 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.95,"detail":"percentile 0.9974"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"5 PoC-in-GitHub repos; 1 nuclei template"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":6.02,"detail":"base score 8.6"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}