{"id":"CVE-2025-30649","aliases":["EUVD-2025-10511","GHSA-8279-hg76-9fpw"],"status":"published","title":"Junos OS: MX240, MX480, MX960 with SPC3: An attacker sending specific packets will cause a CPU utilization DoS.","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\u003e 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  \u003c\u003c\u003c\u003c\u003c\u003c look for high CPU usage","severity":{"version":"4.0","score":8.7,"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00433,"percentile":0.37871,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2025-04-09T19:55:37Z","modified":"2026-06-17T09:09:06Z","products":[{"vendor":"juniper","product":"junos"},{"vendor":"juniper networks","product":"junos os"}],"references":[{"url":"https://supportportal.juniper.net/JSA96459","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-30649"},{"url":"https://github.com/advisories/GHSA-8279-hg76-9fpw"}],"sources":{"cve":[{"id":"CVE-2025-30649","title":"Junos OS: MX240, MX480, MX960 with SPC3: An attacker sending specific packets will cause a CPU utilization DoS.","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\u003e 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  \u003c\u003c\u003c\u003c\u003c\u003c look for high CPU usage","status":"published","published":"2025-04-09T19:55:37.363Z","modified":"2025-04-09T20:03:04.073Z","cvss":[{"version":"4.0","score":8.7,"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","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:32:35.418416Z"}],"euvd":[{"id":"EUVD-2025-10511","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\u003e 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  \u003c\u003c\u003c\u003c\u003c\u003c look for high CPU usage","status":"published","published":"2025-04-09T19:55:37Z","modified":"2025-04-09T20:03:04Z","cvss":[{"version":"4.0","score":8.7,"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","level":"high"}],"updated_at":"2026-11-02T20:52:37.733624Z"}],"ghsa":[{"id":"GHSA-8279-hg76-9fpw","title":"An Improper Input Validation vulnerability in the syslog stream TCP transport of Juniper Networks...","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\u003e 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  \u003c\u003c\u003c\u003c\u003c\u003c look for high CPU usage","status":"published","published":"2025-04-09T21:31:44Z","modified":"2025-04-09T21:31:51Z","cvss":[{"version":"4.0","score":8.7,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:C/RE:M/U:Amber","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:01:03.275422Z"}],"nvd":[{"id":"CVE-2025-30649","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\u003e 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  \u003c\u003c\u003c\u003c\u003c\u003c look for high CPU usage","status":"published","published":"2025-04-09T20:15:28.49Z","modified":"2026-06-17T09:09:06.15Z","cvss":[{"version":"4.0","score":8.7,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:C/RE:M/U:Amber","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:11:00.087098Z"}]}}