23 Oct 2026 15:48:27 UTC
ISE 802.1x Session Hijack Vulnerability
cve-program · CVE-2026-20071 · Published
CVE-2026-20071
ISE 802.1x Session Hijack Vulnerability
CVSS 3.1 3.8 LOWCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-20071
PublishedA vulnerability in the SSID bring-your-own-device (BYOD) onboarding workflow of Cisco ISE could allow an unauthenticated, adjacent attacker to hijack the onboarding session of another user and access protected 802.1X networks. This vulnerability is due to insufficient authentication checks that are performed while a user is being onboarded. An attacker could exploit this vulnerability by spoofing the legitimate user and triggering a redirection to the guest web portal. A successful exploit could allow the attacker to take over the user session and gain access to the protected 802.1X network.
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