CVE-2026-20147
Cisco Identity Services Engine Remote Code Execution Vulnerability
Description
A vulnerability in Cisco ISE and Cisco 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 ISE 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.
INFO
Published Date :
April 15, 2026, 5:17 p.m.
Last Modified :
April 17, 2026, 3:09 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Update Cisco ISE and Cisco ISE-PIC software.
- Validate user input rigorously.
- Restrict administrative access.
- Monitor for suspicious activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-20147.
| URL | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-traversal-8bYndVrZ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-20147 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-20147
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-20147 vulnerability anywhere in the article.
-
Daily CyberSecurity
Public PoC and Technical Details Disclosed for Apache Syncope RCE
A new report from SecureLayer7 has unmasked a high-severity Remote Code Execution (RCE) vulnerability in Apache Syncope, a cornerstone of identity lifecycle management and access governance in many en ... Read more
-
The Cyber Express
Cisco Patches Critical ISE Vulnerabilities Allowing Remote Code Execution Attacks
Cisco has released security updates to fix multiple vulnerabilities in its Identity Services Engine and Webex Services, warning that successful exploitation could lead to remote code execution, root-l ... Read more
-
Daily CyberSecurity
Root Access Unlocked: FortiSandbox CVE-2026-39808 Details and PoC Exploit Publicly Disclosed
Image: Samuel de Lucas Maroto A critical vulnerability in FortiSandbox has been disclosured. The flaw, tracked as CVE-2026-39808, carries a devastating CVSS score of 9.1, allowing unauthenticated atta ... Read more
-
CybersecurityNews
Critical Cisco ISE Vulnerabilities Let Remote Attackers Execute Malicious Code
Cisco has issued an urgent security advisory warning of multiple vulnerabilities in its Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC). According to the official Cisco sec ... Read more
-
The Hacker News
Cisco Patches Four Critical Identity Services, Webex Flaws Enabling Code Execution
Cisco has announced patches to address four critical security flaws impacting Identity Services and Webex Services that could result in arbitrary code execution and allow an attacker to impersonate an ... Read more
-
Daily CyberSecurity
Chrome 147 Update: Google Patches Critical $90,000 ANGLE Flaw and 30 Other Security Gaps
Google has begun rolling out a high-stakes update for the Chrome stable channel, addressing a total of 31 security vulnerabilities, including five rated as Critical. The release, version 147.0.7727.10 ... Read more
-
Daily CyberSecurity
Root Access via Admin: The 9.9 RCE Crisis Threatening Cisco ISE Networks
Cisco has issued an urgent security advisory following the discovery of high-stakes vulnerabilities in its Identity Services Engine (ISE) and Passive Identity Connector (ISE-PIC) platforms. The most s ... Read more
The following table lists the changes that have been made to the
CVE-2026-20147 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Apr. 15, 2026
Action Type Old Value New Value Added Description A vulnerability in Cisco ISE and Cisco 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 ISE 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Added CWE CWE-77 Added Reference https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-traversal-8bYndVrZ