CVE-2023-36844
A PHP External Variable Modification vulnerability in J-Web of Juniper Networks Junos OS on EX Series 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.This issue affects Juniper Networks Junos OS on EX Series: * All versions prior to 20.4R3-S9; * 21.1 versions 21.1R1 and later; * 21.2 versions prior to 21.2R3-S7; * 21.3 versions prior to 21.3R3-S5; * 21.4 versions prior to 21.4R3-S5; * 22.1 versions prior to 22.1R3-S4; * 22.2 versions prior to 22.2R3-S2; * 22.3 versions prior to 22.3R3-S1; * 22.4 versions prior to 22.4R2-S2, 22.4R3; * 23.2 versions prior to 23.2R1-S1, 23.2R2.
- CVSS v3.1
- 5.3 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - CVSS v3.1
- 5.3 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - EPSS
- 90.99% chance of exploitation in the next 30 days, 100th percentile
- CISA KEV
- added 2023-11-13
- Nuclei
- medium · CWE-473
- Published
- 2023-08-17
- Updated
- 2025-10-21
Proof-of-concept exploits (6)
- http://packetstormsecurity.com/files/174865/Juniper-SRX-Firewall-EX-Switch-Remote-Code-Ex…
- Pari-Malam/CVE-2023-368440★ · 2023-09-20
- ThatNotEasy/CVE-2023-368440★ · 2023-09-20
- r3dcl1ff/CVE-2023-36844_Juniper_RCE5★ · 2023-09-24
- watchtowrlabs/juniper-rce_cve-2023-36844115★ · 2023-08-25
- Ap0dexMe0/CVE-2023-36844