Denial of Service Vulnerability in Juniper Networks Junos OS Routing Protocol Daemon
CVE-2025-52953

7.1HIGH

Key Information:

Vendor

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

Badges

👾 Exploit Exists

What is CVE-2025-52953?

A vulnerability in the routing protocol daemon (rpd) of Juniper Networks' Junos OS and Junos OS Evolved could allow an unauthenticated adjacent attacker to exploit valid BGP UPDATE packets. This can lead to repeated resets of BGP sessions, ultimately resulting in a Denial of Service (DoS) condition. Both iBGP and eBGP are susceptible to this vulnerability, affecting both IPv4 and IPv6 connections. Continuous processing of the malicious packets can cause a sustained disruption, impacting network operations.

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/JSA100059
vendor-advisory
https://www.juniper.net/documentation/us/en/software/juno...
technical-description

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-52953 : Denial of Service Vulnerability in Juniper Networks Junos OS Routing Protocol Daemon