CVE-2023-36844
Juniper Junos OS EX Series PHP External Variable Modification Vulnerability
Juniper · Junos OS
Vulnerability details
Juniper Junos OS on EX Series contains a PHP external variable modification vulnerability that allows an unauthenticated, network-based attacker to control certain, important environment variables. Using a crafted request an attacker is able to modify certain PHP environment variables, leading to partial loss of integrity, which may allow chaining to other vulnerabilities.
Added to CISA KEV: 2023-11-13
Ransomware campaign use: Unknown
CISA due date: 2023-11-17
Defensive guidance from CISA
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.
Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC