Main Vulnerability Database SB2026012022

SB2026012022 - Untrusted Pointer Dereference in Junos OS Evolved and Juniper Junos OS

Published: January 20, 2026

Security Bulletin ID SB2026012022

CSH 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 vulnerability.

1) Untrusted Pointer Dereference (CVE-ID: CVE-2025-59959)

CWE-ID: CWE-822 - Untrusted Pointer Dereference

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

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.

References

https://supportportal.juniper.net/s/article/2026-01-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Executing-a-specific-show-command-leads-to-an-rpd-crash-CVE-2025-59959