Vulnerability in Juniper Networks Junos Os
CVE-2025-52953
An Expected Behavior Violation vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker sending a valid BGP UPDATE packet to cause a BGP session reset…
EPSS: 0.002 (37.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Juniper Networks Junos Os — versions 0, 21.4, 22.2
- Juniper Networks Junos Os Evolved — versions 0, 22.4-EVO, 23.2-EVO
Weakness classification (CWE)
Public proof-of-concept exploits
References
- supportportal.juniper.net/JSA100059 (vendor-advisory)
- www.juniper.net/documentation/us/en/software/junos/bgp/topics/task/routing-prot… (technical-description)
Frequently asked questions
- What is CVE-2025-52953?
- CVE-2025-52953 is a medium-severity vulnerability in Juniper Networks Junos Os, classified under Expected Behavior Violation. CVSS score: 6.5/10. Published 2025-07-11.
- How severe is CVE-2025-52953?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2025-52953 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.