{"id":"CVE-2023-36845","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-36845","generatedAt":"2026-10-31T10:22:31.990Z","title":"Juniper Junos OS EX Series and SRX Series PHP External Variable Modification Vulnerability","description":"A PHP External Variable Modification vulnerability in J-Web of Juniper Networks Junos OS on EX Series \n\nand SRX Series \n\nallows an unauthenticated, network-based attacker to remotely execute code.\n\nUsing 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.\n\n\nThis issue affects Juniper Networks Junos OS on EX Series\n\n\nand \n\n\nSRX Series:\n\n\n\n  *  All versions prior to \n\n20.4R3-S9;\n  *  21.1 versions 21.1R1 and later;\n  *  21.2 versions prior to 21.2R3-S7;\n  *  21.3 versions prior to 21.3R3-S5;\n  *  21.4 versions prior to 21.4R3-S5;\n  *  22.1 versions \n\nprior to \n\n22.1R3-S4;\n  *  22.2 versions \n\nprior to \n\n22.2R3-S2;\n  *  22.3 versions \n\nprior to \n\n22.3R2-S2, 22.3R3-S1;\n  *  22.4 versions \n\nprior to \n\n22.4R2-S1, 22.4R3;\n  *  23.2 versions prior to 23.2R1-S1, 23.2R2.","published":"2023-08-17T20:15:10.000Z","lastModified":"2026-06-17T06:07:13.000Z","status":"Analyzed","sourceIdentifier":"sirt@juniper.net","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-473"],"affected":["juniper/junos"],"epss":{"score":0.9507,"percentile":0.99862,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2023-11-13","dueDate":"2023-11-17","knownRansomwareCampaignUse":"Unknown","notes":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.\nhttps://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"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 17 November 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/174865/Juniper-SRX-Firewall-EX-Switch-Remote-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"sirt@juniper.net"},{"url":"http://packetstormsecurity.com/files/176969/Juniper-SRX-Firewall-EX-Switch-Remote-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"sirt@juniper.net"},{"url":"https://supportportal.juniper.net/JSA72300","tags":["Vendor Advisory"],"source":"sirt@juniper.net"},{"url":"http://packetstormsecurity.com/files/174865/Juniper-SRX-Firewall-EX-Switch-Remote-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/176969/Juniper-SRX-Firewall-EX-Switch-Remote-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://supportportal.juniper.net/JSA72300","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-36845","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-36845","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}