SB2026012022 - Untrusted Pointer Dereference in Junos OS Evolved and Juniper Junos OS
Published: January 20, 2026
Security Bulletin ID
SB2026012022
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Untrusted Pointer Dereference (CVE-ID: CVE-2025-59959)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to untrusted pointer dereference error in the routing protocol daemon (rpd). A local user can cause a Denial-of-Service (DoS).
When the command 'show route < ( receive-protocol | advertising-protocol ) bgp > detail' is executed, and at least 1 of the routes in the intended output has specific attributes, this will cause an rpd crash and restart.
Remediation
Install update from vendor's website.