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Juniper - Remote Code Execution CVE-2023-36845

CVSSv3 Score
Vulnerability description

Juniper server is vulnerable to CVE-2023-36845, a Remote Code Execution vulnerability. A PHP External Variable Modification vulnerability in J-Web of Juniper Networks Junos OS on EX Series and SRX Series allows an unauthenticated, network-based attacker to control certain, important environments variables. Utilizing a crafted request an attacker is able to modify a certain PHP environment variable leading to partial loss of integrity, which may allow chaining to other vulnerabilities. We have detected this vulnerability by sending a crafted request to upload a php file which executes the php_uname function to extract information about the system.

Risk description

The risk exists that an unauthenticated remote attacker could gain Remote Code Execution access which will result in a fully compromised server through which they could steal confidential information, install ransomware, or pivot to the internal network.

Exploit capabilities

Sniper can extract custom artefacts as evidence from the target system.


Update the Juniper Networks Junos OS server to the latest version.

Not available
Detectable with
Network Scanner
Scan engine
Exploitable with Sniper
CVE Published
Aug 17, 2023
Detection added at
Software Type
Network Management
Juniper Networks
J-Web Juniper Networks Junos