Use After Free in Juniper Junos
CVE-2025-52946
A Use After Free vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Juniper Networks Junos OS Evolved allows an attacker sending a BGP update with a specifically malformed AS PATH to cause rpd to crash, res…
Vulnerability class: Use-After-Free
EPSS: 0.004 (35.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/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 22.4, 23.2, 23.4
- Juniper Networks Junos Os — versions 0, 21.4, 22.2
- Juniper Networks Junos Os Evolved — versions 0, 23.2-EVO, 23.4-EVO
Weakness classification (CWE)
References
- sirt@juniper.net (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-52946?
- CVE-2025-52946 is a high-severity vulnerability in Juniper Junos, classified under Use After Free. CVSS score: 7.5/10. Published 2025-07-11.
- How severe is CVE-2025-52946?
- High severity. CVSS v3 base score is 7.5 out of 10.