Improper Neutralization of Special Elements in Output Used by a Downstream Component in Cisco Identity Services Engine (ISE) - CVE-2026-20130
Published: September 17, 2026
Vulnerability identifier: #VU150704
CSH Severity: Critical
CVSS v4: 10 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H]
CVE-ID: CVE-2026-20130
CWE-ID: CWE-74
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise confidentiality, integrity, and availability.
The vulnerability exists due to improper neutralization of special elements in output used by a downstream component in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) when processing output for downstream components. A remote attacker can exploit the vulnerability to compromise confidentiality, integrity, and availability.
Affected software
Cisco Identity Services Engine (ISE)
How to mitigate CVE-2026-20130
Install security update from vendor's website.
Cisco Identity Services Engine (ISE) - addressed in versions 3.1 Patch 12, 3.2 Patch 11, 3.3 Patch 12, 3.4 Patch 7, 3.5 Patch 4