Auth bypass in Juniper Junos OS Evolved
CVE-2025-52954
A Missing Authorization vulnerability in the internal virtual routing and forwarding (VRF) of Juniper Networks Junos OS Evolved allows a local, low-privileged user to gain root privileges, leading to a system compromise. Any low-privileged user with the capability to send packets over the internal VRF can execute arbitrary Junos commands and modify the configuration, and thus compromise the system. This issue affects Junos OS Evolved: * All versions before 22.2R3-S7-EVO, * from 22.4 before 22.4R3-S7-EVO, * from 23.2 before 23.2R2-S4-EVO, * from 23.4 before 23.4R2-S5-EVO, * from 24.2 before 24.2R2-S1-EVO * from 24.4 before 24.4R1-S2-EVO, 24.4R2-EVO.
Vulnerability class: Broken Access Control
EPSS: 0.001 (4.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Juniper Junos_os_evolved — versions 22.2, 22.4, 23.2
- Juniper Networks Junos Os Evolved — versions 0, 22.4, 23.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sirt@juniper.net (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-52954?
- CVE-2025-52954 is a high-severity vulnerability in Juniper Junos OS Evolved, classified under Missing Authorization. CVSS score: 7.8/10. Published 2025-07-11.
- How severe is CVE-2025-52954?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2025-52954 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.