CVE-2026-20071
ISE 802.1x Session Hijack Vulnerability
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.
INFO
Published Date :
Sept. 16, 2026, 8:20 p.m.
Last Modified :
Sept. 16, 2026, 8:20 p.m.
Remotely Exploit :
No
Source :
cisco
Affected Products
The following products are affected by CVE-2026-20071
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | LOW | MITRE-CVE |
Solution
- Update Cisco ISE to the latest version.
- Verify authentication checks during onboarding.
- Monitor for session hijacking attempts.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-20071 vulnerability anywhere in the article.