CVE Watch—

CVE-2023-36845

Juniper Junos OS EX Series and SRX Series PHP External Variable Modification Vulnerability

CVSS

—

No CVSS

EPSS

93.5%

p100

KEV

YES

Nov 13, 2023

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

93.5%EPSS · 30 days93.5%

2026-06-302026-07-16

KEV catalog record

Product

Juniper / Junos OS

Vulnerability

Juniper Junos OS EX Series and SRX Series PHP External Variable Modification Vulnerability

Added to KEV

Nov 13, 2023

Remediate by

Nov 17, 2023

Known ransomware use

Summary description

Juniper Junos OS on EX Series and SRX Series contains a PHP external variable modification vulnerability that allows an unauthenticated, network-based attacker to control an important environment variable. Using a crafted request, which sets the variable PHPRC, an attacker is able to modify the PHP execution environment allowing the injection und execution of code.

Required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Notes

https://supportportal.juniper.net/s/article/2023-08-Out-of-Cycle-Security-Bulletin-Junos-OS-SRX-Series-and-EX-Series-Multiple-vulnerabilities-in-J-Web-can-be-combined-to-allow-a-preAuth-Remote-Code-Execution?language=en_US ; https://nvd.nist.gov/vuln/detail/CVE-2023-36845

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