CVE-2026-20184
Last modified
CVE-2026-20184 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A vulnerability in the integration of single sign-on (SSO) with Control Hub in Cisco Webex Services could have allowed an unauthenticated, remote attacker to impersonate any user within the service. This vulnerability existed because of improper certificate validation. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by connecting to a service endpoint and supplying a crafted token. EPSS estimates a 0.52% chance of exploitation in the next 30 days.
Description
A vulnerability in the integration of single sign-on (SSO) with Control Hub in Cisco Webex Services could have allowed an unauthenticated, remote attacker to impersonate any user within the service. This vulnerability existed because of improper certificate validation. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by connecting to a service endpoint and supplying a crafted token. A successful exploit could have allowed the attacker to gain unauthorized access to legitimate Cisco Webex services.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Webex Meetings | 39.7.7; 39.9; 40.4.10; 39.6; 40.6.2; 39.8.2; 39.8.4; 40.1; 39.11; 39.7.4; 39.9.1; 40.4; 40.6; 39.7; 39.8; 39.8.3; 40.2; 39.10; 42.6; 42.7; 42.8; 42.9; 42.10; 42.11; 42.12; 43.1; 43.2; 43.3; 43.4; 43.4.1; 43.4.2; 43.5.0; 43.6.0; 43.6.1; 43.7; 43.8; 43.9; 43.10; 43.11; 43.12; 44.1; 44.2; 44.3; 44.4; 44.5; 44.6; 44.7; 44.8; 44.9; 44.10; 44.11; 44.12; 45.1; 45.2; 45.3; 45.4 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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