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TI-2017-04502 Aliases CVE-2017-6747GHSA-4742-8cjm-26f3

Improper authentication in Cisco Identity Services Engine

Priority MEDIUM 50CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-287.

Summary

A vulnerability in the authentication module of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to bypass local authentication. The vulnerability is due to improper handling of authentication requests and policy assignment for externally authenticated users. An attacker could exploit this vulnerability by authenticating with a valid external user account that matches an internal username and incorrectly receiving the authorization policy of the internal account. An exploit could allow the attacker to have Super Admin privileges for the ISE Admin portal. This vulnerability does not affect endpoints authenticating to the ISE. The vulnerability affects Cisco ISE, Cisco ISE Express, and Cisco ISE Virtual Appliance running Release 1.3, 1.4, 2.0.0, 2.0.1, or 2.1.0. Release 2.2.x is not affected. Cisco Bug IDs: CSCvb10995.

Why it matters now

EPSS 0.05476 92nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Cisco Identity Services EngineCisco Identity Services Engine—No fix listedCNA
  • Cisco Identity Services Engine Vendor— Affected Cisco Identity Services Engine Fixed in — No fix listed CNA

CPE configurations NVD · 18

CPEVersionsRoleVendor
cpe:2.3:a:cisco:identity_services_engine:1.3\(0.722\):*:*:*:*:*:*:*1.3(0.722)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:1.3\(0.876\):*:*:*:*:*:*:*1.3(0.876)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:1.3\(0.909\):*:*:*:*:*:*:*1.3(0.909)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:1.3\(106.146\):*:*:*:*:*:*:*1.3(106.146)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:1.3\(120.135\):*:*:*:*:*:*:*1.3(120.135)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:1.4\(0.109\):*:*:*:*:*:*:*1.4(0.109)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:1.4\(0.181\):*:*:*:*:*:*:*1.4(0.181)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:1.4\(0.253\):*:*:*:*:*:*:*1.4(0.253)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:1.4\(0.908\):*:*:*:*:*:*:*1.4(0.908)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.0\(0.147\):*:*:*:*:*:*:*2.0(0.147)VulnerableCisco
  • cpe:2.3:a:cisco:identity_services_engine:1.3\(0.722\):*:*:*:*:*:*:* Versions 1.3(0.722) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:1.3\(0.876\):*:*:*:*:*:*:* Versions 1.3(0.876) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:1.3\(0.909\):*:*:*:*:*:*:* Versions 1.3(0.909) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:1.3\(106.146\):*:*:*:*:*:*:* Versions 1.3(106.146) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:1.3\(120.135\):*:*:*:*:*:*:* Versions 1.3(120.135) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:1.4\(0.109\):*:*:*:*:*:*:* Versions 1.4(0.109) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:1.4\(0.181\):*:*:*:*:*:*:* Versions 1.4(0.181) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:1.4\(0.253\):*:*:*:*:*:*:* Versions 1.4(0.253) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:1.4\(0.908\):*:*:*:*:*:*:* Versions 1.4(0.908) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.0\(0.147\):*:*:*:*:*:*:* Versions 2.0(0.147) Vulnerable ·Cisco
Show 8 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:cisco:identity_services_engine:2.0\(0.169\):*:*:*:*:*:*:*2.0(0.169)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.0\(0.222\):*:*:*:*:*:*:*2.0(0.222)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.0\(1.130\):*:*:*:*:*:*:*2.0(1.130)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.0_base:*:*:*:*:*:*:*2.0_baseVulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.1\(0.474\):*:*:*:*:*:*:*2.1(0.474)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.1\(0.800\):*:*:*:*:*:*:*2.1(0.800)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.1\(102.101\):*:*:*:*:*:*:*2.1(102.101)VulnerableCisco
cpe:2.3:a:cisco:identity_services_engine:2.1_base:*:*:*:*:*:*:*2.1_baseVulnerableCisco
  • cpe:2.3:a:cisco:identity_services_engine:2.0\(0.169\):*:*:*:*:*:*:* Versions 2.0(0.169) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.0\(0.222\):*:*:*:*:*:*:* Versions 2.0(0.222) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.0\(1.130\):*:*:*:*:*:*:* Versions 2.0(1.130) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.0_base:*:*:*:*:*:*:* Versions 2.0_base Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.1\(0.474\):*:*:*:*:*:*:* Versions 2.1(0.474) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.1\(0.800\):*:*:*:*:*:*:* Versions 2.1(0.800) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.1\(102.101\):*:*:*:*:*:*:* Versions 2.1(102.101) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:identity_services_engine:2.1_base:*:*:*:*:*:*:* Versions 2.1_base Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-6747
  2. 2026-10-03 Alias added: GHSA-4742-8cjm-26f3

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