CVE-2021-40121
Last modified
CVE-2021-40121 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. Multiple vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) Software could allow an attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. For more information about these vulnerabilities, see the Details section of this advisory.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.
Description
Multiple vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) Software could allow an attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. For more information about these vulnerabilities, see the Details section of this advisory.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Identity Services Engine | <= 2.6 |
| Cisco | Identity Services Engine | 2.6\(0.156\) |
| Cisco | Identity Services Engine | 2.6\(0.999\) |
| Cisco | Identity Services Engine | 2.6.0 |
| Cisco | Identity Services Engine | 2.7 |
| Cisco | Identity Services Engine | 2.7\(0.207\) |
| Cisco | Identity Services Engine | 2.7\(0.356\) |
| Cisco | Identity Services Engine | 2.7\(0.903\) |
| Cisco | Identity Services Engine | 2.7.0 |
| Cisco | Identity Services Engine | 3.0\(0.458\) |
| Cisco | Identity Services Engine | 3.0.0 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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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.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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