{"id":"CVE-2025-52960","aliases":["EUVD-2025-33402","GHSA-43j4-83fv-5vcm"],"status":"published","title":"Junos OS: SRX Series and MX Series: Receipt of specific SIP packets in a high utilization situation causes a flowd/mspmand crash","description":"A Buffer Copy without Checking Size of Input vulnerability in the \n\nSession Initialization Protocol (SIP) ALG of Juniper Networks Junos OS on MX Series and SRX Series allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\n\nWhen memory utilization is high, and specific SIP packets are received, flowd/mspmand crashes. While the system recovers automatically, the disruption can significantly impact service stability. Continuous receipt of these specific SIP packets, while high utilization is present, will cause a sustained DoS condition. The utilization is outside the attackers control, so they would not be able to deterministically exploit this.\nThis issue affects Junos OS on SRX Series and MX Series: \n\n\n  *  All versions before 22.4R3-S7,\n  *  from 23.2 before 23.2R2-S4, \n  *  from 23.4 before 23.4R2-S5, \n  *  from 24.2 before 24.2R2.","severity":{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:M","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00331,"percentile":0.26679,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2025-10-09T15:40:20Z","modified":"2026-10-08T13:10:00Z","products":[{"vendor":"juniper","product":"junos"},{"vendor":"juniper networks","product":"junos os"}],"references":[{"url":"https://supportportal.juniper.net/JSA103143","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://kb.juniper.net/JSA103143","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-52960"},{"url":"https://github.com/advisories/GHSA-43j4-83fv-5vcm"}],"sources":{"cve":[{"id":"CVE-2025-52960","title":"Junos OS: SRX Series and MX Series: Receipt of specific SIP packets in a high utilization situation causes a flowd/mspmand crash","description":"A Buffer Copy without Checking Size of Input vulnerability in the \n\nSession Initialization Protocol (SIP) ALG of Juniper Networks Junos OS on MX Series and SRX Series allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\n\nWhen memory utilization is high, and specific SIP packets are received, flowd/mspmand crashes. While the system recovers automatically, the disruption can significantly impact service stability. Continuous receipt of these specific SIP packets, while high utilization is present, will cause a sustained DoS condition. The utilization is outside the attackers control, so they would not be able to deterministically exploit this.\nThis issue affects Junos OS on SRX Series and MX Series: \n\n\n  *  All versions before 22.4R3-S7,\n  *  from 23.2 before 23.2R2-S4, \n  *  from 23.4 before 23.4R2-S5, \n  *  from 24.2 before 24.2R2.","status":"published","published":"2025-10-09T15:40:20.193Z","modified":"2025-12-01T08:41:51.806Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:M","level":"high","assessor":"cna"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:32:31.309974Z"}],"euvd":[{"id":"EUVD-2025-33402","description":"A Buffer Copy without Checking Size of Input vulnerability in the \n\nSession Initialization Protocol (SIP) ALG of Juniper Networks Junos OS on MX Series and SRX Series allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\n\nWhen memory utilization is high, and specific SIP packets are received, flowd/mspmand crashes. While the system recovers automatically, the disruption can significantly impact service stability. Continuous receipt of these specific SIP packets, while high utilization is present, will cause a sustained DoS condition. The utilization is outside the attackers control, so they would not be able to deterministically exploit this.\nThis issue affects Junos OS on SRX Series and MX Series: \n\n\n  *  All versions before 22.4R3-S7,\n  *  from 23.2 before 23.2R2-S4, \n  *  from 23.4 before 23.4R2-S5, \n  *  from 24.2 before 24.2R2.","status":"published","published":"2025-10-09T15:40:20Z","modified":"2025-12-01T08:41:51Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:M","level":"high"}],"updated_at":"2026-11-02T19:49:11.947161Z"}],"ghsa":[{"id":"GHSA-43j4-83fv-5vcm","title":"A Buffer Copy without Checking Size of Input vulnerability in the \n\nSession Initialization...","description":"A Buffer Copy without Checking Size of Input vulnerability in the \n\nSession Initialization Protocol (SIP) ALG of Juniper Networks Junos OS on MX Series and SRX Series allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\n\nWhen memory utilization is high, and specific SIP packets are received, flowd crashes. While the system recovers automatically, the disruption can significantly impact service stability. Continuous receipt of these specific SIP packets, while high utilization is present, will cause a sustained DoS condition. The utilization is outside the attackers control, so they would not be able to deterministically exploit this.\nThis issue affects Junos OS on SRX Series and MX Series: \n\n\n  *  All versions before 22.4R3-S7,\n  *  from 23.2 before 23.2R2-S4, \n  *  from 23.4 before 23.4R2-S5, \n  *  from 24.2 before 24.2R2.","status":"published","published":"2025-10-09T18:30:36Z","modified":"2025-12-01T09:31:33Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/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:A/V:X/RE:M/U:X","level":"high"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T15:04:59.128724Z"}],"nvd":[{"id":"CVE-2025-52960","description":"A Buffer Copy without Checking Size of Input vulnerability in the \n\nSession Initialization Protocol (SIP) ALG of Juniper Networks Junos OS on MX Series and SRX Series allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\n\nWhen memory utilization is high, and specific SIP packets are received, flowd/mspmand crashes. While the system recovers automatically, the disruption can significantly impact service stability. Continuous receipt of these specific SIP packets, while high utilization is present, will cause a sustained DoS condition. The utilization is outside the attackers control, so they would not be able to deterministically exploit this.\nThis issue affects Junos OS on SRX Series and MX Series: \n\n\n  *  All versions before 22.4R3-S7,\n  *  from 23.2 before 23.2R2-S4, \n  *  from 23.4 before 23.4R2-S5, \n  *  from 24.2 before 24.2R2.","status":"published","published":"2025-10-09T16:15:45.033Z","modified":"2026-10-08T13:10:00.2Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/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:A/V:X/RE:M/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:11:35.93863Z"}]}}