Vulnerability · Published Jan 15, 2026 · Assigned by juniper
CVE-2025-59959Junos OS and Junos OS Evolved: Executing a specific show command leads to an rpd crash
Medium 5.5
In plain English
A medium-severity security flaw in Junos OS from Juniper Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).
Official description
An Untrusted Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, authenticated attacker with low privileges to cause a Denial-of-Service (DoS). When the command 'show route < ( receive-protocol | advertising-protocol ) bgp > detail' is executed, and at least one of the routes in the intended output has specific attributes, this will cause an rpd crash and restart. 'show route ... extensive' is not affected. This issue affects: Junos OS: * all versions before 22.4R3-S8, * 23.2 versions before 23.2R2-S5, * 23.4 versions before 23.4R2-S5, * 24.2 versions before 24.2R2-S2, * 24.4 versions before 24.4R2; Junos OS Evolved: * all versions before 22.4R3-S8-EVO, * 23.2 versions before 23.2R2-S5-EVO, * 23.4 versions before 23.4R2-S6-EVO, * 24.2 versions before 24.2R2-S2-EVO, * 24.4 versions before 24.4R2-EVO.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Juniper Networks | Junos OS | 0 – before 22.4R3-S823.2 – before 23.2R2-S523.4 – before 23.4R2-S524.2 – before 24.2R2-S224.4 – before 24.4R2 |
| Juniper Networks | Junos OS Evolved | 0 – before 22.4R3-S8-EVO23.2 – before 23.2R2-S5-EVO23.4 – before 23.4R2-S6-EVO24.2 – before 24.2R2-S2-EVO24.4 – before 24.4R2-EVO |
Weakness: CWE-822 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
- https://supportportal.juniper.net/ vendor-advisory
- https://kb.juniper.net/JSA103148 vendor-advisory