Vulnerability in Juniper Junos
CVE-2025-52955
An Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a memory corruption that leads to a rpd crash…
EPSS: 0.003 (18.6th 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 Junos — versions 21.2, 21.4, 22.2
- Juniper Junos_os_evolved — versions 21.2, 21.4, 22.2
- Juniper Networks Junos Os — versions 0, 21.4, 22.2
- Juniper Networks Junos Os Evolved — versions 0, 21.4, 22.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sirt@juniper.net (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-52955?
- CVE-2025-52955 is a medium-severity vulnerability in Juniper Junos, classified under Incorrect Calculation of Buffer Size. CVSS score: 6.5/10. Published 2025-07-11.
- How severe is CVE-2025-52955?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2025-52955 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.