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10.0

Cisco Identity Services Engine may mishandle special input

CVE-2026-20130 · published 26 days ago
Summary

The Cisco Identity Services Engine and its Passive Identity Connector can mistakenly process certain characters, which could let attackers interfere with how the systems handle data. This could lead to incorrect behavior or exposure of information. Apply the latest software hardening update from Cisco as soon as possible to fix the issue.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
cisco cisco identity services engine software 3.1.0
cisco cisco ise passive identity connector 3.2.0
Original advisory text
Cisco Identity Services Engine Hardening Release - Improper Neutralization Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC), engineering teams have conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.

The vulnerabilities tracked by CVE-2026-20130 are related to improper neutralization of special elements issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-74.
References
Fix within
Internet-facing 3 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker full control
Severity
10.0 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-74Injection
Timeline
Published16 Sep 2026
Updated11 Oct 2026
First seen16 Sep 2026
Sources
CVE-2026-20130 · NVD
CVE-2026-20130 · MITRE
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