{"id":"CVE-2025-59964","aliases":["EUVD-2025-33397","GHSA-8cjx-8cpv-m8fr"],"status":"published","title":"Junos OS: SRX4700: When forwarding-options sampling is enabled any traffic destined to the RE will cause the forwarding line card to crash and restart","description":"A Use of Uninitialized Resource vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX4700 devices allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\n\nWhen forwarding-options sampling is enabled, receipt of any traffic destined to the Routing Engine (RE) by the PFE line card leads to an FPC crash and restart, resulting in a Denial of Service (DoS). \n\nContinued receipt and processing of any traffic leading to the RE by the PFE line card will create a sustained Denial of Service (DoS) condition to the PFE line card.\n\n\nThis issue affects Junos OS on SRX4700: \n\n\n\n  *  from 24.4 before 24.4R1-S3, 24.4R2\n\n\nThis issue affects IPv4 and IPv6.","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:A/V:C/RE:M/U:Green","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00355,"percentile":0.29631,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-908"],"published":"2025-10-09T15:46:25Z","modified":"2026-10-08T13:10:00Z","products":[{"vendor":"juniper","product":"junos"},{"vendor":"juniper networks","product":"junos os"}],"references":[{"url":"https://supportportal.juniper.net/JSA103153","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://www.juniper.net/documentation/us/en/software/junos/cli-reference/topics/ref/statement/sampling-edit-forwarding-options.html","tags":["technical-description","Technical Description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-59964"},{"url":"https://github.com/advisories/GHSA-8cjx-8cpv-m8fr"}],"sources":{"cve":[{"id":"CVE-2025-59964","title":"Junos OS: SRX4700: When forwarding-options sampling is enabled any traffic destined to the RE will cause the forwarding line card to crash and restart","description":"A Use of Uninitialized Resource vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX4700 devices allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\n\nWhen forwarding-options sampling is enabled, receipt of any traffic destined to the Routing Engine (RE) by the PFE line card leads to an FPC crash and restart, resulting in a Denial of Service (DoS). \n\nContinued receipt and processing of any traffic leading to the RE by the PFE line card will create a sustained Denial of Service (DoS) condition to the PFE line card.\n\n\nThis issue affects Junos OS on SRX4700: \n\n\n\n  *  from 24.4 before 24.4R1-S3, 24.4R2\n\n\nThis issue affects IPv4 and IPv6.","status":"published","published":"2025-10-09T15:46:25.285Z","modified":"2025-10-09T19:00:04.954Z","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:A/V:C/RE:M/U:Green","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-908"],"updated_at":"2026-11-02T14:32:47.812946Z"}],"euvd":[{"id":"EUVD-2025-33397","description":"A Use of Uninitialized Resource vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX4700 devices allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\n\nWhen forwarding-options sampling is enabled, receipt of any traffic destined to the Routing Engine (RE) by the PFE line card leads to an FPC crash and restart, resulting in a Denial of Service (DoS). \n\nContinued receipt and processing of any traffic leading to the RE by the PFE line card will create a sustained Denial of Service (DoS) condition to the PFE line card.\n\n\nThis issue affects Junos OS on SRX4700: \n\n\n\n  *  from 24.4 before 24.4R1-S3, 24.4R2\n\n\nThis issue affects IPv4 and IPv6.","status":"published","published":"2025-10-09T15:46:25Z","modified":"2025-10-09T19:00:04Z","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:A/V:C/RE:M/U:Green","level":"high"}],"updated_at":"2026-11-02T20:31:34.46826Z"}],"ghsa":[{"id":"GHSA-8cjx-8cpv-m8fr","title":"A Use of Uninitialized Resource vulnerability in the Packet Forwarding Engine (PFE) of Juniper...","description":"A Use of Uninitialized Resource vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX4700 devices allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\n\nWhen forwarding-options sampling is enabled, receipt of any traffic destined to the Routing Engine (RE) by the PFE line card leads to an FPC crash and restart, resulting in a Denial of Service (DoS). \n\nContinued receipt and processing of any traffic leading to the RE by the PFE line card will create a sustained Denial of Service (DoS) condition to the PFE line card.\n\n\nThis issue affects Junos OS on SRX4700: \n\n\n\n  *  from 24.4 before 24.4R1-S3, 24.4R2\n\n\nThis issue affects IPv4 and IPv6.","status":"published","published":"2025-10-09T18:30:36Z","modified":"2025-10-09T18:30:43Z","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:A/V:C/RE:M/U:Green","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-908"],"updated_at":"2026-11-02T15:03:54.922073Z"}],"nvd":[{"id":"CVE-2025-59964","description":"A Use of Uninitialized Resource vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX4700 devices allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\n\nWhen forwarding-options sampling is enabled, receipt of any traffic destined to the Routing Engine (RE) by the PFE line card leads to an FPC crash and restart, resulting in a Denial of Service (DoS). \n\nContinued receipt and processing of any traffic leading to the RE by the PFE line card will create a sustained Denial of Service (DoS) condition to the PFE line card.\n\n\nThis issue affects Junos OS on SRX4700: \n\n\n\n  *  from 24.4 before 24.4R1-S3, 24.4R2\n\n\nThis issue affects IPv4 and IPv6.","status":"published","published":"2025-10-09T16:15:46.443Z","modified":"2026-10-08T13:10:00.2Z","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:A/V:C/RE:M/U:Green","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-908"],"updated_at":"2026-11-02T14:11:35.93863Z"}]}}