{"id":"CVE-2026-102078","revision":"8878b1ee65ea4c019e07440ed2c558a2","records":[{"revision":"8878b1ee65ea4c019e07440ed2c558a2","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-102078","aliases":[],"title":"Junos OS: SRX Series: A high volume of DNS traffic over TCP can lead to a flowd crash","description":"A Use After Free vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).\n\n\n\nWhen web filtering for TCP traffic is configured, a high volume of DNS requests increases the likelihood of a flowd crash and restart, which leads to a complete service outage until the service has automatically recovered. This is a race condition outside the attacker's direct control.\n\nThis issue affects Junos OS on SRX Series:\n\n\n  *  All versions before 23.2R2-S5;\n  *  from 23.4 before 23.4R2-S6;\n  *  from 24.2 before 24.2R2-S3;\n  *  from 24.4 before 24.4R2-S1;\n  *  from 25.2 before 25.2R1-S1, 25.2R2.","state":0,"publishedAt":"2026-10-14T16:27:24.894+00:00","modifiedAt":"2026-10-14T20:26:05.668+00:00","affected":[{"ecosystem":"Vendor product","name":"Junos OS","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"platforms\": [\n                        \"SRX Series\"\n                    ],\n                    \"product\": \"Junos OS\",\n                    \"vendor\": \"Juniper Networks\",\n                    \"versions\": [\n                        {\n                            \"lessThan\": \"23.2R2-S5\",\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"versionType\": \"custom\"\n                        },\n                        {\n                            \"lessThan\": \"23.4R2-S6\",\n                            \"status\": \"affected\",\n                            \"version\": \"23.4\",\n                            \"versionType\": \"custom\"\n                        },\n                        {\n                            \"lessThan\": \"24.2R2-S3\",\n                            \"status\": \"affected\",\n                            \"version\": \"24.2\",\n                            \"versionType\": \"custom\"\n                        },\n                        {\n                            \"lessThan\": \"24.4R2-S1\",\n                            \"status\": \"affected\",\n                            \"version\": \"24.4\",\n                            \"versionType\": \"custom\"\n                        },\n                        {\n                            \"lessThan\": \"25.2R1-S1, 25.2R2\",\n                            \"status\": \"affected\",\n                            \"version\": \"25.2\",\n                            \"versionType\": \"custom\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9,"severity":"MEDIUM"},{"system":"CVSS 4.0","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/RE:M","score":8.2,"severity":"HIGH"}],"references":["https://supportportal.juniper.net/JSA112181"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-102078","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-102078","identifiers":["CVE-2026-102078"]},"retained":false,"historicalAffected":[]}],"coverage":[]}