Untrusted Pointer Dereference in Junos OS Evolved and Juniper Junos OS - CVE-2025-59959

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Main Vulnerability Database Vulnerabilities #VU121682

Untrusted Pointer Dereference in Junos OS Evolved and Juniper Junos OS - CVE-2025-59959

Published: January 20, 2026


Vulnerability identifier: #VU121682
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2025-59959
CWE-ID: CWE-822
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Juniper Networks, Inc.
Affected software:
Junos OS Evolved
Juniper Junos OS

Detailed vulnerability description

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.


How to mitigate CVE-2025-59959

Install updates from vendor's website.

Sources