{"cve":"CVE-2025-30649","nvd":{"published":"2025-04-09T20:15:28.490","modified":"2026-06-17T09:09:06.150","status":"Analyzed","description":"An Improper Input Validation vulnerability in the syslog stream TCP transport of Juniper Networks Junos OS on MX240, MX480 and MX960 devices with MX-SPC3 Security Services Card allows an unauthenticated, network-based attacker, to send specific spoofed packets to cause a CPU Denial of Service (DoS) to the MX-SPC3 SPUs.\n\nContinued receipt and processing of these specific packets will sustain the DoS condition.\n\nThis issue affects Junos OS:  *  All versions before 22.2R3-S6,\n  *  from 22.4 before 22.4R3-S4,\n  *  from 23.2 before 23.2R2-S3,\n  *  from 23.4 before 23.4R2-S4,\n  *  from 24.2 before 24.2R1-S2, 24.2R2\n\n\nAn indicator of compromise will indicate the SPC3 SPUs utilization has spiked.\n\n\nFor example: \n   user@device> show services service-sets summary\n                     Service sets                                                                               CPU\n  Interface          configured       Bytes used             Session bytes used        Policy bytes used        utilization\n  \"interface\"          1              \"bytes\" (percent%)     \"sessions\" (\"percent\"%)   \"bytes\" (\"percent\"%)     99.97 % OVLD  <<<<<< look for high CPU usage","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U/V:C/RE:M/U:Amber","score":8.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-20"],"references":["https://supportportal.juniper.net/JSA96459"],"products":["juniper:junos"],"source":"nvd","synced_at":"2026-10-19T22:00:57.946988208+00:00"},"epss":{"cve":"CVE-2025-30649","score":0.00424,"percentile":0.36726,"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."]}