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Python CVE-2026-33793

| EUVD-2026-21095 HIGH
Execution with Unnecessary Privileges (CWE-250)
2026-04-09 juniper GHSA-fc25-pm3m-2gqh
Privilege Escalation Python Juniper
8.5
CVSS 4.0
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CVSS VectorNVD

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
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

7
Re-analysis Queued
Apr 16, 2026 - 16:22 vuln.today
cvss_changed
Analysis Updated
Apr 16, 2026 - 06:00 EUVD-patch-fix
executive_summary
Re-analysis Queued
Apr 16, 2026 - 05:29 backfill_euvd_patch
patch_released
Patch available
Apr 16, 2026 - 05:29 EUVD
23.2R2-S4,24.4R1-S1-EVO,22.4R3-S7
EUVD ID Assigned
Apr 09, 2026 - 21:45 euvd
EUVD-2026-21095
Analysis Generated
Apr 09, 2026 - 21:45 vuln.today
CVE Published
Apr 09, 2026 - 21:24 nvd
HIGH 8.5

DescriptionNVD

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.

AnalysisAI

Local privilege escalation in Juniper Networks Junos OS and Junos OS Evolved allows low-privileged authenticated users to execute arbitrary code with root privileges. When unsigned Python operation scripts are enabled in device configuration, attackers can inject and execute malicious op scripts under root-equivalent context, achieving complete system compromise. …

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RemediationAI

Within 24 hours: Identify all Juniper Junos OS and Junos OS Evolved devices in production and verify if unsigned Python operation scripts are enabled (check device configuration for op script settings). Within 7 days: Apply vendor-released patches-upgrade to Junos OS 22.4R3-S7 or later for affected branches (all versions before 22.4R3-S7 and through 24.4 require remediation); apply corresponding Junos OS Evolved patches. …

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CVE-2026-33793 vulnerability details – vuln.today
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