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.
Metrics
Affected Vendors & Products
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Solution
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Workaround
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Thu, 17 Sep 2026 15:30:00 +0000
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ssvc
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Wed, 16 Sep 2026 20:30:00 +0000
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| Description | A 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. | |
| Title | ISE 802.1x Session Hijack Vulnerability | |
| Weaknesses | CWE-290 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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MITRE
Status: PUBLISHED
Assigner: cisco
Published:
Updated: 2026-09-17T14:05:45.971Z
Reserved: 2025-10-08T11:59:15.357Z
Link: CVE-2026-20071
Vulnrichment
Updated: 2026-09-17T14:05:41.575Z
NVD
Status : Received
Published: 2026-09-16T21:17:07.087
Modified: 2026-09-17T14:17:12.533
Link: CVE-2026-20071
Redhat
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OpenCVE Enrichment
Updated: 2026-09-17T20:45:16Z