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CVE PROGRAM SOURCE RECORD8.5 High

CVE-2026-33793

Junos OS and Junos OS Evolved: When an unsigned Python op script configuration is present, a local low privileged user can compromise the system

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Status
Published
Published
Updated
Assigning organization
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. When 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.  This issue affects Junos OS:  * All versions before 22.4R3-S7,  * from 23.2 before 23.2R2-S4,  * from 23.4 before 23.4R2-S6, * from 24.2 before 24.2R1-S2, 24.2R2,  * from 24.4 before 24.4R1-S2, 24.4R2;  Junos OS Evolved:  * All versions before 22.4R3-S7-EVO,  * from 23.2 before 23.2R2-S4-EVO,  * from 23.4 before 23.4R2-S6-EVO, * from 24.2 before 24.2R2-EVO,  * from 24.4 before 24.4R1-S1-EVO, 24.4R2-EVO.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Juniper Networks Junos OS

Default version status: unaffected

  • 0 to < 22.4R3-S7affected
  • 23.2 to < 23.2R2-S4affected
  • 23.4 to < 23.4R2-S6affected
  • 24.2 to < 24.2R1-S2, 24.2R2affected
  • 24.4 to < 24.4R1-S2, 24.4R2affected

Juniper Networks Junos OS Evolved

Default version status: unaffected

  • 0 to < 22.4R3-S7-EVOaffected
  • 23.2 to < 23.2R2-S4-EVOaffected
  • 23.4 to < 23.4R2-S6-EVOaffected
  • 24.2 to < 24.2R2-EVOaffected
  • 24.4 to < 24.4R1-S1-EVO, 24.4R2-EVOaffected

References