{"cve":"CVE-2024-39553","nvd":{"published":"2024-07-11T17:15:16.620","modified":"2026-06-17T07:42:12.560","status":"Analyzed","description":"An Exposure of Resource to Wrong Sphere vulnerability in the sampling service of Juniper Networks Junos OS Evolved allows an unauthenticated network-based attacker to send arbitrary data to the device, which leads msvcsd process to crash with limited availability impacting Denial of Service (DoS) and allows unauthorized network access to the device, potentially impacting system integrity.\n\nThis issue only happens when inline jflow is configured.\n\nThis does not impact any forwarding traffic. The impacted services MSVCS-DB app crashes momentarily and recovers by itself. \n\nThis issue affects Juniper Networks Junos OS Evolved: \n  *  21.4 versions earlier than 21.4R3-S7-EVO; \n  *  22.2 versions earlier than 22.2R3-S3-EVO;\n  *  22.3 versions earlier than 22.3R3-S2-EVO;\n  *  22.4 versions earlier than 22.4R3-EVO;\n  *  23.2 versions earlier than 23.2R1-S2-EVO, 23.2R2-EVO.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:L/R:A","score":6.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","score":6.5},"cwes":["CWE-668"],"references":["https://supportportal.juniper.net/JSA79101","https://supportportal.juniper.net/JSA79101"],"products":["juniper:junos_os_evolved"],"source":"nvd","synced_at":"2026-10-19T21:52:42.518321223+00:00"},"epss":{"cve":"CVE-2024-39553","score":0.00398,"percentile":0.34013,"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."]}