Answer in brief
CVE-2026-20181 records a Critical severity (CVSS 9.1) vulnerability in Cisco Identity Services Engine Remote Code Execution Vulnerability. The current sources do not mark it as known exploited. The current feed maps Cisco/Cisco Identity Services Engine Software (generic), Cisco/Cisco ISE Passive Identity Connector (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Cisco/Cisco Identity Services Engine Software (generic), Cisco/Cisco ISE Passive Identity Connector (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Cisco/Cisco Identity Services Engine Softwaregeneric | 3.1.0 || 3.1.0 p1 || 3.1.0 p3 || 3.1.0 p2 || 3.2.0 || 3.1.0 p4 || 3.1.0 p5 || 3.2.0 p1 || 3.1.0 p6 || 3.2.0 p2 || 3.1.0 p7 || 3.3.0 || 3.2.0 p3 || 3.2.0 p4 || 3.1.0 p8 || 3.2.0 p5 || 3.2.0 p6 || 3.1.0 p9 || 3.3 Patch 2 || 3.3 Patch 1 || 3.3 Patch 3 || 3.4.0 || 3.2.0 p7 || 3.3 Patch 4 || 3.4 Patch 1 || 3.1.0 p10 || 3.3 Patch 5 || 3.3 Patch 6 || 3.4 Patch 2 || 3.3 Patch 7 || 3.4 Patch 3 || 3.5.0 || 3.4 Patch 4 || 3.3 Patch 8 || 3.2 Patch 8 || 3.5 Patch 1 || 3.3 Patch 9 || 3.2 Patch 9 || 3.4 Patch 5 || 3.5 Patch 3 || 3.5 Patch 2 || 3.3 Patch 10 || 3.2 Patch 10 || 3.1.0 p11 | Not reported |
| Cisco/Cisco ISE Passive Identity Connectorgeneric | 3.2.0 || 3.1.0 || 3.3.0 || 3.4.0 || 3.5.0 | Not reported |
Published upstream
Jun 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 22, 2026
A vulnerability in Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-20181 records a Critical severity (CVSS 9.1) vulnerability in Cisco Identity Services Engine Remote Code Execution Vulnerability. The current sources do not mark it as known exploited. The current feed maps Cisco/Cisco Identity Services Engine Software (generic), Cisco/Cisco ISE Passive Identity Connector (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Cisco/Cisco Identity Services Engine Software (generic), Cisco/Cisco ISE Passive Identity Connector (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Cisco/Cisco Identity Services Engine Softwaregeneric | 3.1.0 || 3.1.0 p1 || 3.1.0 p3 || 3.1.0 p2 || 3.2.0 || 3.1.0 p4 || 3.1.0 p5 || 3.2.0 p1 || 3.1.0 p6 || 3.2.0 p2 || 3.1.0 p7 || 3.3.0 || 3.2.0 p3 || 3.2.0 p4 || 3.1.0 p8 || 3.2.0 p5 || 3.2.0 p6 || 3.1.0 p9 || 3.3 Patch 2 || 3.3 Patch 1 || 3.3 Patch 3 || 3.4.0 || 3.2.0 p7 || 3.3 Patch 4 || 3.4 Patch 1 || 3.1.0 p10 || 3.3 Patch 5 || 3.3 Patch 6 || 3.4 Patch 2 || 3.3 Patch 7 || 3.4 Patch 3 || 3.5.0 || 3.4 Patch 4 || 3.3 Patch 8 || 3.2 Patch 8 || 3.5 Patch 1 || 3.3 Patch 9 || 3.2 Patch 9 || 3.4 Patch 5 || 3.5 Patch 3 || 3.5 Patch 2 || 3.3 Patch 10 || 3.2 Patch 10 || 3.1.0 p11 | Not reported |
| Cisco/Cisco ISE Passive Identity Connectorgeneric | 3.2.0 || 3.1.0 || 3.3.0 || 3.4.0 || 3.5.0 | Not reported |
Published upstream
Jun 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 22, 2026
A vulnerability in Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.
Quoted source text, attributed separately from HOL analysis.