{"cve":"CVE-2023-36840","nvd":{"published":"2023-07-14T18:15:10.290","modified":"2026-06-17T06:07:11.820","status":"Modified","description":"A Reachable Assertion vulnerability in Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows a locally-based, low-privileged attacker to cause a Denial of Service (DoS).\n\nOn all Junos OS and Junos OS Evolved, when a specific L2VPN command is run, RPD will crash and restart. Continued execution of this specific command will create a sustained Denial of Service (DoS) condition.\n\nThis issue affects:\nJuniper Networks Junos OS\nAll versions prior to 19.3R3-S10;\n20.1 versions prior to 20.1R3-S4;\n20.2 versions prior to 20.2R3-S6;\n20.3 versions prior to 20.3R3-S6;\n20.4 versions prior to 20.4R3-S5;\n21.1 versions prior to 21.1R3-S4;\n21.2 versions prior to 21.2R3-S3;\n21.3 versions prior to 21.3R3-S2;\n21.4 versions prior to 21.4R3;\n22.1 versions prior to 22.1R3;\n22.2 versions prior to 22.2R2;\n22.3 versions prior to 22.3R2;\n\nJuniper Networks Junos OS Evolved\nAll versions prior to 20.4R3-S7-EVO;\n21.1 versions prior to 21.1R3-S3-EVO;\n21.2 versions prior to 21.2R3-S5-EVO;\n21.3 versions prior to 21.3R3-S4-EVO;\n21.4 versions prior to 21.4R3-EVO;\n22.1 versions prior to 22.1R3-EVO;\n22.2 versions prior to 22.2R2-EVO;\n22.3 versions prior to 22.3R2-EVO;","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-617"],"references":["https://supportportal.juniper.net/JSA71647","https://supportportal.juniper.net/JSA71647"],"products":["juniper:junos","juniper:junos_os_evolved"],"source":"nvd","synced_at":"2026-10-19T21:38:35.729974749+00:00"},"epss":{"cve":"CVE-2023-36840","score":0.00194,"percentile":0.09095,"date":"2026-10-31"},"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."]}