Memory leak in Junos OS Evolved and Juniper Junos OS - CVE-2025-52986
Published: July 18, 2025
Vulnerability identifier: #VU113063
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-2025-52986
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Juniper Networks, Inc.
Affected software:
Junos OS Evolved
Juniper Junos OS
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 missing release of memory after effective lifetime error in the routing protocol daemon (rpd). A local user can cause an impact to the availability of the device.
When RIB sharding is enabled and a user executes 1 of several routing related 'show' commands, a certain amount of memory is leaked.
When all available memory has been consumed rpd will crash and restart.
How to mitigate CVE-2025-52986
Install updates from vendor's website.