{"cve":"CVE-2023-36851","nvd":{"published":"2023-09-27T15:18:54.877","modified":"2026-06-17T06:07:13.967","status":"Analyzed","description":"A Missing Authentication for Critical Function vulnerability in Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity.\n\n\n\nWith a specific request to \n\nwebauth_operation.php\n\nthat doesn't require authentication, an attacker is able to upload and download arbitrary files via J-Web, leading to a loss of \n\nintegrity or confidentiality, which may allow chaining to other vulnerabilities.\n\n\nThis issue affects Juniper Networks Junos OS on SRX Series:\n\n\n\n  *  \n\n21.2 versions prior to 21.2R3-S8;\n  *  21.4 \n\nversions prior to \n\n21.4R3-S6;\n  *  22.1 \n\nversions prior to \n\n22.1R3-S5;\n  *  22.2 \n\nversions prior to \n\n22.2R3-S3;\n  *  22.3 \n\nversions prior to \n\n22.3R3-S2;\n  *  22.4 versions prior to 22,4R2-S2, 22.4R3;\n  *  23.2 versions prior to \n\n23.2R1-S2, 23.2R2.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":["CWE-306"],"references":["https://supportportal.juniper.net/JSA72300","https://supportportal.juniper.net/JSA72300","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-36851"],"products":["juniper:junos"],"source":"nvd","synced_at":"2026-10-19T21:39:34.467980132+00:00"},"epss":{"cve":"CVE-2023-36851","score":0.01123,"percentile":0.66255,"date":"2026-10-31"},"kev":{"cve":"CVE-2023-36851","date_added":"2023-11-13","due_date":"2023-11-17","vendor":"Juniper","product":"Junos OS","known_ransomware":false},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}