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TI-2021-17316 Aliases CVE-2021-40121GHSA-x2xf-qg7j-8h8x

Cisco Identity Services Engine Cross-Site Scripting Vulnerabilities

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00462 40th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Identity Services Engine Softwareall versions—No fix listedCNA
  • Cisco Identity Services Engine Software VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 26

CPEVersionsRoleVendor
cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*up to 2.6VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.6\(0.156\):*:*:*:*:*:*:*2.6(0.156)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.6\(0.999\):-:*:*:*:*:*:*2.6(0.999)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.6.0:-:*:*:*:*:*:*2.6.0VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch1:*:*:*:*:*:*2.6.0 patch1VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch2:*:*:*:*:*:*2.6.0 patch2VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch3:*:*:*:*:*:*2.6.0 patch3VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch5:*:*:*:*:*:*2.6.0 patch5VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch6:*:*:*:*:*:*2.6.0 patch6VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch7:*:*:*:*:*:*2.6.0 patch7VulnerableCisco
  • cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:* Versions up to 2.6 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.6\(0.156\):*:*:*:*:*:*:* Versions 2.6(0.156) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.6\(0.999\):-:*:*:*:*:*:* Versions 2.6(0.999) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.6.0:-:*:*:*:*:*:* Versions 2.6.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch1:*:*:*:*:*:* Versions 2.6.0 patch1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch2:*:*:*:*:*:* Versions 2.6.0 patch2 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch3:*:*:*:*:*:* Versions 2.6.0 patch3 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch5:*:*:*:*:*:* Versions 2.6.0 patch5 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch6:*:*:*:*:*:* Versions 2.6.0 patch6 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch7:*:*:*:*:*:* Versions 2.6.0 patch7 Vulnerable ·Cisco
Show 16 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch8:*:*:*:*:*:*2.6.0 patch8VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch9:*:*:*:*:*:*2.6.0 patch9VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.7:*:*:*:*:*:*:*2.7VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.7\(0.207\):*:*:*:*:*:*:*2.7(0.207)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.7\(0.356\):*:*:*:*:*:*:*2.7(0.356)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.7\(0.356\):-:*:*:*:*:*:*2.7(0.356)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.7\(0.903\):*:*:*:*:*:*:*2.7(0.903)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.7.0:-:*:*:*:*:*:*2.7.0VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch1:*:*:*:*:*:*2.7.0 patch1VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch2:*:*:*:*:*:*2.7.0 patch2VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch3:*:*:*:*:*:*2.7.0 patch3VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch4:*:*:*:*:*:*2.7.0 patch4VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:3.0\(0.458\):*:*:*:*:*:*:*3.0(0.458)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:3.0.0:-:*:*:*:*:*:*3.0.0VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch1:*:*:*:*:*:*3.0.0 patch1VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch2:*:*:*:*:*:*3.0.0 patch2VulnerableCisco
  • cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch8:*:*:*:*:*:* Versions 2.6.0 patch8 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch9:*:*:*:*:*:* Versions 2.6.0 patch9 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.7:*:*:*:*:*:*:* Versions 2.7 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.7\(0.207\):*:*:*:*:*:*:* Versions 2.7(0.207) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.7\(0.356\):*:*:*:*:*:*:* Versions 2.7(0.356) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.7\(0.356\):-:*:*:*:*:*:* Versions 2.7(0.356) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.7\(0.903\):*:*:*:*:*:*:* Versions 2.7(0.903) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.7.0:-:*:*:*:*:*:* Versions 2.7.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch1:*:*:*:*:*:* Versions 2.7.0 patch1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch2:*:*:*:*:*:* Versions 2.7.0 patch2 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch3:*:*:*:*:*:* Versions 2.7.0 patch3 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch4:*:*:*:*:*:* Versions 2.7.0 patch4 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:3.0\(0.458\):*:*:*:*:*:*:* Versions 3.0(0.458) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:3.0.0:-:*:*:*:*:*:* Versions 3.0.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch1:*:*:*:*:*:* Versions 3.0.0 patch1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch2:*:*:*:*:*:* Versions 3.0.0 patch2 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Cisco Identity Services Engine Software — 20211020 Cisco Identity Services Engine Cross-Site Scripting Vulnerabilities

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2021-13737 Cisco Identity Services Engine Cross-Site Scripting VulnerabilitiesPriority LOW 28
    Show all 2 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-40121
  2. 2026-10-03 Alias added: GHSA-x2xf-qg7j-8h8x

References

Advisory 1

  • TI-2026-53488 Cisco Identity Services Engine Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-14632 Cisco ISE API Unauthenticated Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-14578 Cisco ISE API Unauthenticated Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-14579 Cisco ISE API Unauthenticated Remote Code Execution Vulnerability CVSS 3.1CRITICAL 10.0
  • TI-2022-05522 OS command injection in Cisco Identity Services Engine Software CVSS 3.1HIGH 8.8
See all 197 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences