CVE-2023-28966 Junos OS Evolved: Local low-privileged user with shell access can execute CLI commands as root
A local low-privileged user with shell access can execute CLI commands as root due to incorrect default permissions on system files.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-28966?
CVE-2023-28966 is a high-severity vulnerability in Juniper Junos Os Evolved, published on 17 Apr 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An Incorrect Default Permissions vulnerability in Juniper Networks Junos OS Evolved allows a low-privileged local attacker with shell access to modify existing files or execute commands as root. The issue is caused by improper file and directory permissions on certain system files, allowing an attacker with access to these files and folders to inject CLI commands as root. This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R3-S5-EVO; 21.2 versions prior to 21.2R3-EVO; 21.3 versions prior to 21.3R2-EVO.
Weakness: CWE-276
Which versions are affected by CVE-2023-28966?
It affects 1 product.
Products include Juniper Junos Os Evolved.
How do I fix CVE-2023-28966?
No fix has been published for CVE-2023-28966 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-28966 being exploited?
There is no known exploitation of CVE-2023-28966 in the wild and no public exploit code.
Other vulnerabilities in Juniper Junos Os Evolved
- CVE-2026-21902 Junos OS Evolved: PTX Series: A vulnerability allows a unauthenticated, network-based attacker to execute code as root
- CVE-2023-28983 Junos OS Evolved: Shell Injection vulnerability in the gNOI server
- CVE-2025-21599 Denial of service in Junos OS Evolved
- CVE-2024-47502 Junos OS Evolved: TCP session state is not always cleared on the Routing Engine leading to DoS
- CVE-2024-39531 Junos OS Evolved: ACX 7000 Series: Protocol specific DDoS configuration affects other protocols
Sources
Also known as GHSA-j4j5-7fvq-m4rf.