Vulnerability in Juniper Ex9200-15c
CVE-2025-30661
An Incorrect Permission Assignment for Critical Resource vulnerability in line card script processing of Juniper Networks Junos OS allows a local, low-privileged user to install scripts to be executed as root, leading to privilege escalation. A local user with access to the local file system can copy a script to the router in a way that will be executed as root, as the system boots. Execution of the script as root can lead to privilege escalation, potentially providing the adversary complete control of the system. This issue only affects specific line cards, such as the MPC10, MPC11, LC4800, LC9600, MX304-LMIC16, SRX4700, and EX9200-15C. This issue affects Junos OS: * from 23.2 before 23.2R2-S4, * from 23.4 before 23.4R2-S5, * from 24.2 before 24.2R2-S1, * from 24.4 before 24.4R1-S3, 24.4R2. This issue does not affect versions prior to 23.1R2.
EPSS: 0.002 (6.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Juniper Ex9200-15c
- Juniper Junos — versions 23.2, 23.4, 24.2
- Juniper Lc4800
- Juniper Lc9600
- Juniper Mpc10e-10c
- Juniper Mpc10e-15c
- Juniper Mpc11
- Juniper Mx304-lmic16
- Juniper Srx4700
- Juniper Networks Junos Os — versions 23.2, 23.4, 24.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sirt@juniper.net (vendor-advisory, Vendor Advisory)
- sirt@juniper.net (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2025-30661?
- CVE-2025-30661 is a high-severity vulnerability in Juniper Ex9200-15c, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.3/10. Published 2025-07-11.
- How severe is CVE-2025-30661?
- High severity. CVSS v3 base score is 7.3 out of 10.
- Is CVE-2025-30661 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.