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Medium severity4.8NVD Advisory· Published Jul 8, 2021· Updated Jun 17, 2026

CVE-2021-1603

CVE-2021-1603

Description

Multiple vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user. These vulnerabilities exist because the web-based management interface does not sufficiently validate user-supplied input. An attacker could exploit these vulnerabilities by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit these vulnerabilities, the attacker would need valid administrative credentials.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

19
  • Cisco Systems, Inc./Identity Services Engine Software18 versions
    cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*+ 17 more
    • cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*range: <2.6.0
    • cpe:2.3:a:cisco:identity_services_engine:2.6.0:-:*:*:*:*:*:*
    • cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch1:*:*:*:*:*:*
    • cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch2:*:*:*:*:*:*
    • cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch3:*:*:*:*:*:*
    • cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch5:*:*:*:*:*:*
    • cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch6:*:*:*:*:*:*
    • cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch7:*:*:*:*:*:*
    • cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch8:*:*:*:*:*:*
    • cpe:2.3:a:cisco:identity_services_engine:2.6\(0.999\):-:*:*:*:*:*:*
    • cpe:2.3:a:cisco:identity_services_engine:2.7.0:-:*:*:*:*:*:*
    • cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch1:*:*:*:*:*:*
    • cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch2:*:*:*:*:*:*
    • cpe:2.3:a:cisco:identity_services_engine:2.7\(0.356\):-:*:*:*:*:*:*
    • cpe:2.3:a:cisco:identity_services_engine:3.0.0:-:*:*:*:*:*:*
    • cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch1:*:*:*:*:*:*
    • cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch2:*:*:*:*:*:*
    • (no CPE)range: n/a
  • Cisco Systems, Inc./Identity Services Engine Expressllm-fuzzy

Patches

Vulnerability mechanics

References

1

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