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4.9
MEDIUM CVSS 3.1
CVE-2026-20148
Cisco Identity Services Engine Path Traversal Vulnerability
Overview
Description

A vulnerability in Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to perform path traversal attacks on the underlying operating system and read arbitrary files. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected system. A successful exploit could allow the attacker to access sensitive files on the affected system.

Details
INFO

Published Date :

April 15, 2026, 5:17 p.m.

Last Modified :

July 8, 2026, 2:20 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Impact
Affected Products

The following products are affected by CVE-2026-20148 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.

ID Vendor Product Action
1 Cisco identity_services_engine
2 Cisco identity_services_engine_passive_identity_connector
: Total Affected Vendor : 1 | Products : 2
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 134c704f-9b21-4f2e-91b3-4a467353bcc0
CVSS 3.1 MEDIUM [email protected]
Solution
Patch Cisco ISE and Cisco ISE-PIC to fix path traversal vulnerability.
  • Update Cisco ISE and Cisco ISE-PIC to the latest version.
  • Apply vendor-supplied security patches immediately.
  • Restrict administrative access to authorized personnel only.
References
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-2026-20148.

URL Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-traversal-8bYndVrZ 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-2026-20148 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-2026-20148 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-2026-20148 vulnerability anywhere in the article.

  • 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

Published Date: Apr 16, 2026 (2 months, 3 weeks ago)
  • 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

Published Date: Apr 16, 2026 (2 months, 3 weeks ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-20148 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]

    Jul. 08, 2026

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:* versions up to (excluding) 3.1 *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:3.2.0:-:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.1.0:-:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch1:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch2:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch3:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch4:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch5:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch6:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch7:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch8:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch1:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch3:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch2:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch4:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch5:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch6:*:*:*:*:*:* *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:3.1.0:patch9:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch7:*:*:*:*:*:* *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:3.1.0:patch10:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch6:*:*:*:*:*:* *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:3.2.0:patch8:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch9:*:*:*:*:*:*
    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) 3.1.0 *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.1.0:-:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.1.0:patch1:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.1.0:patch2:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.1.0:patch3:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.1.0:patch4:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.1.0:patch5:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.1.0:patch6:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.1.0:patch7:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.1.0:patch8:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.1.0:patch9:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.2.0:-:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.2.0:patch1:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.2.0:patch2:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.2.0:patch3:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.2.0:patch4:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.2.0:patch5:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.2.0:patch6:*:*:*:*:*:* *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:3.1.0:patch10:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.2.0:patch7:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.2.0:patch8:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.2.0:patch9:*:*:*:*:*:*
    Added Reference Type Cisco Systems, Inc.: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-traversal-8bYndVrZ Types: Vendor Advisory
  • CVE Modified 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'}], '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'}], 'defaultStatus': 'unknown'}]
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Jun. 17, 2026

    Action Type Old Value New Value
    Added SSVC {'id': 'CVE-2026-20148', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-04-15T16:50:58.114801Z'}
  • 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 perform path traversal attacks on the underlying operating system and read arbitrary files. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected system. A successful exploit could allow the attacker to access sensitive files on the affected system.
    Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
    Added CWE CWE-22
    Added Reference https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-traversal-8bYndVrZ
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 4.9
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact