{"cve":"CVE-2023-44204","nvd":{"published":"2023-10-13T00:15:13.070","modified":"2026-06-17T06:27:07.440","status":"Analyzed","description":"An Improper Validation of Syntactic Correctness of Input vulnerability in Routing Protocol Daemon (rpd) Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network based attacker to cause a Denial of Service (DoS).\n\nWhen a malformed BGP UPDATE packet is received over an established BGP session, the rpd crashes and restarts.\n\nThis issue affects both eBGP and iBGP implementations.\n\nThis issue affects:\n\nJuniper Networks Junos OS\n\n\n\n  *  21.4 versions prior to 21.4R3-S4;\n  *  22.1 versions prior to 22.1R3-S3;\n  *  22.2 versions prior to 22.2R3-S2;\n  *  22.3 versions prior to 22.3R2-S2, 22.3R3;\n  *  22.4 versions prior to 22.4R2-S1, 22.4R3;\n  *  23.2 versions prior to 23.2R1, 23.2R2;\n\n\n\n\nJuniper Networks Junos OS Evolved\n\n\n\n  *  21.4 versions prior to 21.4R3-S5-EVO;\n  *  22.1 versions prior to 22.1R3-S3-EVO;\n  *  22.2 versions prior to 22.2R3-S3-EVO;\n  *  22.3 versions prior to 22.3R2-S2-EVO;\n  *  22.4 versions prior to 22.4R3-EVO;\n  *  23.2 versions prior to 23.2R2-EVO;","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-20","CWE-1286"],"references":["https://supportportal.juniper.net/JSA73170","https://supportportal.juniper.net/JSA73170"],"products":["juniper:junos","juniper:junos_os_evolved"],"source":"nvd","synced_at":"2026-10-19T21:39:34.467980132+00:00"},"epss":{"cve":"CVE-2023-44204","score":0.003,"percentile":0.22751,"date":"2026-11-01"},"kev":null,"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."]}