CVE-2026-33793

April 9, 2026, 10:16 p.m.

8.5
High

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.

Product(s) Impacted

Vendor Product Versions
Juniper
  • Juniper Junos Os
  • Juniper Junos Os Evolved
  • <22.4R3-S7, 23.2, 23.4, 24.2, 24.4
  • <22.4R3-S7-EVO, 23.2, 23.4, 24.2, 24.4

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-250
Execution with Unnecessary Privileges
The product performs an operation at a privilege level that is higher than the minimum level required, which creates new weaknesses or amplifies the consequences of other weaknesses.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a juniper juniper_junos_os <22.4R3-S7 / / / / / / /
a juniper juniper_junos_os 23.2 <23.2R2-S4 / / / / / /
a juniper juniper_junos_os 23.4 <23.4R2-S6 / / / / / /
a juniper juniper_junos_os 24.2 <24.2R1-S2 / / / / / /
a juniper juniper_junos_os 24.2 24.2R2 / / / / / /
a juniper juniper_junos_os 24.4 <24.4R1-S2 / / / / / /
a juniper juniper_junos_os 24.4 24.4R2 / / / / / /
a juniper juniper_junos_os_evolved <22.4R3-S7-EVO / / / / / / /
a juniper juniper_junos_os_evolved 23.2 <23.2R2-S4-EVO / / / / / /
a juniper juniper_junos_os_evolved 23.4 <23.4R2-S6-EVO / / / / / /
a juniper juniper_junos_os_evolved 24.2 <24.2R2-EVO / / / / / /
a juniper juniper_junos_os_evolved 24.4 <24.4R1-S1-EVO / / / / / /
a juniper juniper_junos_os_evolved 24.4 24.4R2-EVO / / / / / /

References

https://kb.juniper.net/JSA103142

Tags

CWE-250
[email protected]
2026-04-09
CVE-2026-33793

CVSS Score

8.5 / 10

CVSS Data - 4.0

  • Attack Vector: LOCAL
  • Attack Complexity: LOW
  • Attack Requirements: NONE
  • Privileges Required: LOW
  • User Interaction: NONE
  • Scope:
  • Confidentiality Impact: HIGH
  • Integrity Impact: HIGH
  • Availability Impact: HIGH
  • Exploit Maturity: NOT_DEFINED

    • 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

    View Vector String

Timeline

Published: April 9, 2026, 10:16 p.m.
Last Modified: April 9, 2026, 10:16 p.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.