Memory Leak Vulnerability in Junos OS and Junos OS Evolved by Juniper Networks
CVE-2025-52986

6.8MEDIUM

Key Information:

Vendor

Juniper Networks
Status
Junos Os
Junos Os Evolved
Vendor
CVE Published:
11 July 2025

Badges

👾 Exploit Exists

What is CVE-2025-52986?

A vulnerability in the routing protocol daemon (rpd) of Juniper Networks' Junos OS and Junos OS Evolved can be exploited by a local user with low privileges. When RIB sharding is enabled, executing routing-related commands can lead to a memory leak. This leak may be monitored using specific CLI commands, and consistent exploitation can exhaust available memory, causing rpd to crash and restart. Affected versions include various releases of Junos OS and Junos OS Evolved, requiring immediate attention to maintain device stability.

Affected Version(s)

Junos OS 0 < 21.2R3-S9

Junos OS 21.4 < 21.4R3-S11

Junos OS 22.2 < 22.2R3-S7

References

https://supportportal.juniper.net/JSA100092
vendor-advisory

CVSS V4

Score:
6.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-52986 : Memory Leak Vulnerability in Junos OS and Junos OS Evolved by Juniper Networks