CVE-2026-33793: An Execution with Unnecessary Privileges vulnerability in the User Interface (UI) of Juniper Networks Junos OS and…

CVE-2026-33793 · Severity: high · CVSS 7.8 · Published 2026-04-09

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.

Technologies: Juniper Junos, Juniper Junos Os Evolved. Vendors: Juniper.

Quick answers

Is CVE-2026-33793 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-33793 being exploited in the wild.
How severe is CVE-2026-33793?
High severity, with a CVSS score of 7.8, published 9 April 2026.
Which products and versions are affected?
Juniper Junos, Juniper Junos Os Evolved. The advisory does not name versions.
Is there a fix for CVE-2026-33793?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-33793?
Check whether you run Juniper Junos or Juniper Junos Os Evolved. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Juniper Junos
  • Juniper Junos Os Evolved

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