CVE-2026-20180

CRITICAL

Cisco Identity Services Engine Multiple Remote Code Execution Vulnerability

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-20180. PoCs published by kaleth4.

AI-analyzed exploit summary This repository provides a detailed technical analysis of multiple Cisco ISE vulnerabilities, including CVE-2025-20281, CVE-2025-20282, and CVE-2025-20124, with in-depth explanations of exploitation techniques, evasion methods, and remediation strategies. It includes step-by-step exploitation examples, payloads, and architectural impact analysis.

Description

A vulnerability in Cisco Identity Services Engine (ISE) 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 at least Read Only Admin 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 ISE deployments, successful exploitation of these vulnerabilities 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.

Exploits (1)

nomisec WRITEUP
by kaleth4 · poc
https://github.com/kaleth4/CVE-2026-20180

This repository provides a detailed technical analysis of multiple Cisco ISE vulnerabilities, including CVE-2025-20281, CVE-2025-20282, and CVE-2025-20124, with in-depth explanations of exploitation techniques, evasion methods, and remediation strategies. It includes step-by-step exploitation examples, payloads, and architectural impact analysis.

Classification
Writeup 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Cisco Identity Services Engine (ISE)
No auth needed
Prerequisites: Network access to Cisco ISE management interface · Knowledge of target endpoints
devstral-2 · analyzed Apr 22, 2026 Full analysis →

Scores

CVSS v3 9.9
EPSS 0.0047
EPSS Percentile 65.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-22
Status published
Products (33)
Cisco/Cisco Identity Services Engine Software 3.1.0
Cisco/Cisco Identity Services Engine Software 3.1.0 p1
Cisco/Cisco Identity Services Engine Software 3.1.0 p10
Cisco/Cisco Identity Services Engine Software 3.1.0 p2
Cisco/Cisco Identity Services Engine Software 3.1.0 p3
Cisco/Cisco Identity Services Engine Software 3.1.0 p4
Cisco/Cisco Identity Services Engine Software 3.1.0 p5
Cisco/Cisco Identity Services Engine Software 3.1.0 p6
Cisco/Cisco Identity Services Engine Software 3.1.0 p7
Cisco/Cisco Identity Services Engine Software 3.1.0 p8
... and 23 more
Published Apr 15, 2026
Tracked Since Apr 15, 2026