CVE-2026-20181
Cisco Identity Services Engine Remote Code Execution Vulnerability
Description
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.
INFO
Published Date :
June 17, 2026, 5:16 p.m.
Last Modified :
June 22, 2026, 2:31 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-20181
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Update Cisco ISE and ISE-PIC software.
- Apply vendor patches immediately.
- Validate system integrity after patching.
- Restrict administrative access
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-2026-20181.
| URL | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multi-G5WP8vv | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-20181 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-2026-20181
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-2026-20181 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-20181 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.
-
Initial Analysis by [email protected]
Jun. 22, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:cisco:identity_services_engine:3.4.0:-:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:-:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch1:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch2:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch3:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch4:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch5:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch1:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch6:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:* versions up to (excluding) 3.3.0 *cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch2:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch3:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch7:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch4:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch5:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.5.0:-:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.5.0:patch1:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.5.0:patch2:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch10:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch8:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch9:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.5.0:patch3:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:-:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch1:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch2:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch3:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch4:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch5:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:-:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch1:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch6:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:*:*:*:*:*:*:*:* versions up to (excluding) 3.3.0 *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch2:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch3:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch4:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch5:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.5.0:-:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.5.0:patch1:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.5.0:patch2:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch10:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch7:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch8:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch9:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.5.0:patch3:*:*:*:*:*:* Added Reference Type Cisco Systems, Inc.: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multi-G5WP8vv Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 18, 2026
Action Type Old Value New Value Changed SSVC {'id': 'CVE-2026-20181', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-17T16:29:22.923302Z'} {'id': 'CVE-2026-20181', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-17T00:00:00+00:00'} -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-20181', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-17T16:29:22.923302Z'} -
New CVE Received by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Cisco', 'product': 'Cisco Identity Services Engine Software', 'versions': [{'status': 'affected', 'version': '3.1.0'}, {'status': 'affected', 'version': '3.1.0 p1'}, {'status': 'affected', 'version': '3.1.0 p3'}, {'status': 'affected', 'version': '3.1.0 p2'}, {'status': 'affected', 'version': '3.2.0'}, {'status': 'affected', 'version': '3.1.0 p4'}, {'status': 'affected', 'version': '3.1.0 p5'}, {'status': 'affected', 'version': '3.2.0 p1'}, {'status': 'affected', 'version': '3.1.0 p6'}, {'status': 'affected', 'version': '3.2.0 p2'}, {'status': 'affected', 'version': '3.1.0 p7'}, {'status': 'affected', 'version': '3.3.0'}, {'status': 'affected', 'version': '3.2.0 p3'}, {'status': 'affected', 'version': '3.2.0 p4'}, {'status': 'affected', 'version': '3.1.0 p8'}, {'status': 'affected', 'version': '3.2.0 p5'}, {'status': 'affected', 'version': '3.2.0 p6'}, {'status': 'affected', 'version': '3.1.0 p9'}, {'status': 'affected', 'version': '3.3 Patch 2'}, {'status': 'affected', 'version': '3.3 Patch 1'}, {'status': 'affected', 'version': '3.3 Patch 3'}, {'status': 'affected', 'version': '3.4.0'}, {'status': 'affected', 'version': '3.2.0 p7'}, {'status': 'affected', 'version': '3.3 Patch 4'}, {'status': 'affected', 'version': '3.4 Patch 1'}, {'status': 'affected', 'version': '3.1.0 p10'}, {'status': 'affected', 'version': '3.3 Patch 5'}, {'status': 'affected', 'version': '3.3 Patch 6'}, {'status': 'affected', 'version': '3.4 Patch 2'}, {'status': 'affected', 'version': '3.3 Patch 7'}, {'status': 'affected', 'version': '3.4 Patch 3'}, {'status': 'affected', 'version': '3.5.0'}, {'status': 'affected', 'version': '3.4 Patch 4'}, {'status': 'affected', 'version': '3.3 Patch 8'}, {'status': 'affected', 'version': '3.2 Patch 8'}, {'status': 'affected', 'version': '3.5 Patch 1'}, {'status': 'affected', 'version': '3.3 Patch 9'}, {'status': 'affected', 'version': '3.2 Patch 9'}, {'status': 'affected', 'version': '3.4 Patch 5'}, {'status': 'affected', 'version': '3.5 Patch 3'}, {'status': 'affected', 'version': '3.5 Patch 2'}, {'status': 'affected', 'version': '3.3 Patch 10'}, {'status': 'affected', 'version': '3.2 Patch 10'}, {'status': 'affected', 'version': '3.1.0 p11'}], 'defaultStatus': 'unknown'}, {'vendor': 'Cisco', 'product': 'Cisco ISE Passive Identity Connector', 'versions': [{'status': 'affected', 'version': '3.2.0'}, {'status': 'affected', 'version': '3.1.0'}, {'status': 'affected', 'version': '3.3.0'}, {'status': 'affected', 'version': '3.4.0'}, {'status': 'affected', 'version': '3.5.0'}], 'defaultStatus': 'unknown'}] Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H Added CWE CWE-22 Added Reference https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multi-G5WP8vv