{"id":"CVE-2026-33793","aliases":["EUVD-2026-21095","GHSA-fc25-pm3m-2gqh"],"status":"published","title":"Junos OS and Junos OS Evolved: When an unsigned Python op script configuration is present, a local low privileged user can compromise the system","description":"An Execution with Unnecessary Privileges vulnerability in the User Interface (UI) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker to gain root privileges, thus compromising the system.\n\nWhen a configuration that allows unsigned Python op scripts is present on the device, a non-root user is able to execute malicious op scripts as a root-equivalent user, leading to privilege escalation. \n\nThis issue affects Junos OS: \n\n  *  All versions before 22.4R3-S7, \n  *  from 23.2 before 23.2R2-S4, \n  *  from 23.4 before 23.4R2-S6,\n  *  from 24.2 before 24.2R1-S2, 24.2R2, \n  *  from 24.4 before 24.4R1-S2, 24.4R2; \n\n\n\n\nJunos OS Evolved: \n\n\n\n  *  All versions before 22.4R3-S7-EVO, \n  *  from 23.2 before 23.2R2-S4-EVO, \n  *  from 23.4 before 23.4R2-S6-EVO,\n  *  from 24.2 before 24.2R2-EVO, \n  *  from 24.4 before 24.4R1-S1-EVO, 24.4R2-EVO.","severity":{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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":"2026-11-12","score":0.00162,"percentile":0.05463,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-250"],"published":"2026-04-09T21:24:50Z","modified":"2026-10-26T22:10:00Z","products":[{"vendor":"juniper","product":"junos"},{"vendor":"juniper","product":"junos_os_evolved"},{"vendor":"juniper networks","product":"junos os"},{"vendor":"juniper networks","product":"junos os evolved"}],"references":[{"url":"https://supportportal.juniper.net/JSA103142","tags":["vendor-advisory","Mitigation","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33793"},{"url":"https://kb.juniper.net/JSA103142"},{"url":"https://github.com/advisories/GHSA-fc25-pm3m-2gqh"}],"sources":{"cve":[{"id":"CVE-2026-33793","title":"Junos OS and Junos OS Evolved: When an unsigned Python op script configuration is present, a local low privileged user can compromise the system","description":"An Execution with Unnecessary Privileges vulnerability in the User Interface (UI) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker to gain root privileges, thus compromising the system.\n\nWhen a configuration that allows unsigned Python op scripts is present on the device, a non-root user is able to execute malicious op scripts as a root-equivalent user, leading to privilege escalation. \n\nThis issue affects Junos OS: \n\n  *  All versions before 22.4R3-S7, \n  *  from 23.2 before 23.2R2-S4, \n  *  from 23.4 before 23.4R2-S6,\n  *  from 24.2 before 24.2R1-S2, 24.2R2, \n  *  from 24.4 before 24.4R1-S2, 24.4R2; \n\n\n\n\nJunos OS Evolved: \n\n\n\n  *  All versions before 22.4R3-S7-EVO, \n  *  from 23.2 before 23.2R2-S4-EVO, \n  *  from 23.4 before 23.4R2-S6-EVO,\n  *  from 24.2 before 24.2R2-EVO, \n  *  from 24.4 before 24.4R1-S1-EVO, 24.4R2-EVO.","status":"published","published":"2026-04-09T21:24:50.485Z","modified":"2026-04-16T15:14:18.212Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-250"],"updated_at":"2026-11-02T14:20:07.609948Z"}],"euvd":[{"id":"EUVD-2026-21095","description":"An Execution with Unnecessary Privileges vulnerability in the User Interface (UI) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker to gain root privileges, thus compromising the system.\n\nWhen a configuration that allows unsigned Python op scripts is present on the device, a non-root user is able to execute malicious op scripts as a root-equivalent user, leading to privilege escalation. \n\nThis issue affects Junos OS: \n\n  *  All versions before 22.4R3-S7, \n  *  from 23.2 before 23.2R2-S4, \n  *  from 23.4 before 23.4R2-S6,\n  *  from 24.2 before 24.2R1-S2, 24.2R2, \n  *  from 24.4 before 24.4R1-S2, 24.4R2; \n\n\n\n\nJunos OS Evolved: \n\n\n\n  *  All versions before 22.4R3-S7-EVO, \n  *  from 23.2 before 23.2R2-S4-EVO, \n  *  from 23.4 before 23.4R2-S6-EVO,\n  *  from 24.2 before 24.2R2-EVO, \n  *  from 24.4 before 24.4R1-S1-EVO, 24.4R2-EVO.","status":"published","published":"2026-04-09T21:24:50Z","modified":"2026-04-16T15:14:18Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U/V:C/RE:M/U:Amber","level":"high"}],"updated_at":"2026-11-02T19:24:23.841547Z"}],"ghsa":[{"id":"GHSA-fc25-pm3m-2gqh","title":"An Execution with Unnecessary Privileges vulnerability in the User Interface (UI) of Juniper...","description":"An Execution with Unnecessary Privileges vulnerability in the User Interface (UI) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker to gain root privileges, thus compromising the system.\n\nWhen a configuration that allows unsigned Python op scripts is present on the device, a non-root user is able to execute malicious op scripts as a root-equivalent user, leading to privilege escalation. \n\nThis issue affects Junos OS: \n\n  *  All versions before 22.4R3-S7, \n  *  from 23.2 before 23.2R2-S4, \n  *  from 23.4 before 23.4R2-S6,\n  *  from 24.2 before 24.2R1-S2, 24.2R2, \n  *  from 24.4 before 24.4R1-S2, 24.4R2; \n\n\n\n\nJunos OS Evolved: \n\n\n\n  *  All versions before 22.4R3-S7-EVO, \n  *  from 23.2 before 23.2R2-S4-EVO, \n  *  from 23.4 before 23.4R2-S6-EVO,\n  *  from 24.2 before 24.2R2-EVO, \n  *  from 24.4 before 24.4R1-S1-EVO, 24.4R2-EVO.","status":"published","published":"2026-04-10T00:30:29Z","modified":"2026-04-16T18:32:28Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-250"],"updated_at":"2026-11-02T15:07:31.795355Z"}],"nvd":[{"id":"CVE-2026-33793","description":"An Execution with Unnecessary Privileges vulnerability in the User Interface (UI) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker to gain root privileges, thus compromising the system.\n\nWhen a configuration that allows unsigned Python op scripts is present on the device, a non-root user is able to execute malicious op scripts as a root-equivalent user, leading to privilege escalation. \n\nThis issue affects Junos OS: \n\n  *  All versions before 22.4R3-S7, \n  *  from 23.2 before 23.2R2-S4, \n  *  from 23.4 before 23.4R2-S6,\n  *  from 24.2 before 24.2R1-S2, 24.2R2, \n  *  from 24.4 before 24.4R1-S2, 24.4R2; \n\n\n\n\nJunos OS Evolved: \n\n\n\n  *  All versions before 22.4R3-S7-EVO, \n  *  from 23.2 before 23.2R2-S4-EVO, \n  *  from 23.4 before 23.4R2-S6-EVO,\n  *  from 24.2 before 24.2R2-EVO, \n  *  from 24.4 before 24.4R1-S1-EVO, 24.4R2-EVO.","status":"published","published":"2026-04-09T22:16:29.297Z","modified":"2026-10-26T22:10:00.163Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-250"],"updated_at":"2026-11-02T14:12:13.902911Z"}]}}