SB2026061768 - Multiple vulnerabilities in Cisco Identity Services Engine
Published: June 17, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Input validation error (CVE-ID: CVE-2026-20181)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to improper input validation in HTTP request handling when processing user-supplied input. A remote privileged user can send a crafted HTTP request to execute arbitrary code.
Successful exploitation could provide user-level access to the underlying operating system and allow further privilege escalation to root. In single-node deployments, exploitation could cause the affected node to become unavailable.
2) Improper Authorization (CVE-ID: CVE-2026-20190)
CWE-ID: CWE-285 - Improper Authorization
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper access control in a resource when accessing the resource. A remote attacker can send crafted traffic to disclose sensitive information.
Exposed information may include hashed credentials that could be used in future attacks.
Remediation
Install update from vendor's website.