TI-2019-01473 Aliases CVE-2019-1851 GHSA-6wxc-vxm7-4wrp

Cisco Identity Services Engine Arbitrary Client Certificate Creation Vulnerability

LOW 32CWE-285Published 2019-05-16 · Updated 2024-11-21

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-285.

Summary

A vulnerability in the External RESTful Services (ERS) API of the Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to generate arbitrary certificates signed by the Internal Certificate Authority (CA) Services on ISE. This vulnerability is due to an incorrect implementation of role-based access control (RBAC). An attacker could exploit this vulnerability by crafting a specific HTTP request with administrative credentials. A successful exploit could allow the attacker to generate a certificate that is signed and trusted by the ISE CA with arbitrary attributes. The attacker could use this certificate to access other networks or assets that are protected by certificate authentication.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01101 65th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco Identity Services Engine Software	all versions	—	No fix listed	CNA

Cisco Identity Services Engine Software VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:identity_services_engine:2.2\(0.470\):::::::*	2.2(0.470)	Vulnerable	Cisco
cpe:2.3:a:cisco:identity_services_engine:2.3\(0.298\):::::::*	2.3(0.298)	Vulnerable	Cisco
cpe:2.3:a:cisco:identity_services_engine:2.4\(0.357\):::::::*	2.4(0.357)	Vulnerable	Cisco

cpe:2.3:a:cisco:identity_services_engine:2.2\(0.470\):*:*:*:*:*:*:* Versions 2.2(0.470) Vulnerable ·Cisco
cpe:2.3:a:cisco:identity_services_engine:2.3\(0.298\):*:*:*:*:*:*:* Versions 2.3(0.298) Vulnerable ·Cisco
cpe:2.3:a:cisco:identity_services_engine:2.4\(0.357\):*:*:*:*:*:*:* Versions 2.4(0.357) Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2019-1851
2026-10-03 Alias added: GHSA-6wxc-vxm7-4wrp

References

Advisory 1

20190515 Cisco Identity Services Engine Arbitrary Client Certificate Creation Vulnerability

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