What’s Vulnerable › Vulnerabilities

CVE-2021-34738: Cisco Identity Services Engine Cross-Site Scripting Vulnerabilities

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-21 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• Cisco Identity Services Engine: before 2.6.0; 2.6.0, 2.6.0-patch1, 2.6.0-patch2, 2.6.0-patch3, 2.6.0-patch5, 2.6.0-patch6 (+17) — fixed in 2.6.0

How to fix

Upgrade to a fixed version: Cisco Identity Services Engine 2.6.0. Check the vendor advisory for mitigations.

References

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-xss1-rgxYry2V
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-xss1-rgxYry2V

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