CVE-2026-20071
published 2026-09-16CVE-2026-20071: A vulnerability in the SSID bring-your-own-device (BYOD) onboarding workflow of Cisco ISE could allow an unauthenticated, adjacent attacker to hijack the…
PriorityP419low3.8CVSS 3.1
AVAACLPRNUIRSCCNILAN
EPSS
0.15%
3.5th percentile
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.
Affected
48 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
| cisco | cisco_identity_services_engine_software | — | — |
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GHSA
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 ac
ghsa_unreviewed·2026-09-16
CVE-2026-20071 [LOW] CWE-290 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 ac
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.
VulDB
Cisco Identity Services Engine up to 3.5.0 SSID BYOD Onboarding Workflow improper authentication
vuldb·2026-09-16·CVSS 3.8
CVE-2026-20071 [LOW] Cisco Identity Services Engine up to 3.5.0 SSID BYOD Onboarding Workflow improper authentication
A vulnerability, which was classified as problematic, has been found in Cisco Identity Services Engine. Affected by this vulnerability is an unknown functionality of the component SSID BYOD Onboarding Workflow. Performing a manipulation results in improper authentication.
This vulnerability is reported as CVE-2026-20071. The attack is possible to be carried out remotely. No exploit exists.
It is advisable to upgrade the affected component.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-09-16
Published