{"id":"CVE-2026-57026","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-57026","summary":"An Improper Validation of Syntactic Correctness of Input vulnerability in the SIP plugin of Juniper Networks Junos OS on MX Series with SPC3 and SRX Series allows an unauthenticated,…","details":"An Improper Validation of Syntactic Correctness of Input vulnerability in the SIP plugin of Juniper Networks Junos OS on MX Series with SPC3 and SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).If the SIP ALG is enabled on an affected device, the processing of a malformed SIP invite packet will cause a flow processing daemon (flowd) crash and restart. This leads to a complete service outage until the system has automatically recovered.\n\n\n\nThis issue affects Junos OS on MX Series with SPC3 and SRX Series:\n\n\n  *  all versions before 23.2R2-S7,\n  *  23.4 versions before 23.4R2-S8,\n  *  24.2 versions before 24.2R2-S5,\n  *  24.4 versions before 24.4R2-S4,\n  *  25.2 versions before 25.2R2,\n  *  25.4 versions before 25.4R1-S2.","published":"2026-07-09T22:17:07.923","modified":"2026-07-14T15:03:23.637","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://supportportal.juniper.net/JSA110086"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-07-14T15:03:23.637"}}