SB2026022617 - Remote code execution in Juniper Networks Junos OS Evolved on PTX Series
Published: February 26, 2026
Security Bulletin ID
SB2026022617
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Incorrect permission assignment for critical resource (CVE-ID: CVE-2026-21902)
CWE-ID: CWE-732 - Incorrect Permission Assignment for Critical Resource
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to incorrect permissions assignment in the On-Box Anomaly detection framework. A remote non-authenticated attacker can send specially crafted data to the system and execute arbitrary code as root.
Remediation
Install update from vendor's website.