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High severity7.8NVD Advisory· Published Jul 11, 2024· Updated Jun 17, 2026

CVE-2024-39521

CVE-2024-39521

Description

An Improper Neutralization of Special Elements vulnerability in Juniper Networks Junos OS Evolved commands allows a local, authenticated attacker with low privileges to escalate their privileges to 'root' leading to a full compromise of the system.

The Junos OS Evolved CLI doesn't properly handle command options in some cases, allowing users which execute specific CLI commands with a crafted set of parameters to escalate their privileges to root on shell level.

This issue affects Junos OS Evolved:

  • 21.1-EVO versions 21.1R1-EVO and later before 21.2R3-S8-EVO,
  • 21.4-EVO versions before 21.4R3-S7-EVO,
  • 22.1-EVO versions before 22.1R3-S6-EVO,
  • 22.2-EVO versions before 22.2R3-EVO,
  • 22.3-EVO versions before 22.3R2-EVO.

Affected products

42
  • Juniper Networks/OS Evolved42 versions
    cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:*+ 41 more
    • cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:*range: >=21.1,<21.2
    • cpe:2.3:o:juniper:junos_os_evolved:21.2:-:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.2:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.2:r1-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.2:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.2:r2-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.2:r2-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.2:r2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s4:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s5:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s6:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s7:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.2:r3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:-:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r1-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r2-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r2-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r3-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r3-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r3-s3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r3-s4:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r3-s5:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r3-s6:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r3-s7:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:22.2:-:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:22.2:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:22.2:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:22.2:r2-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:22.2:r2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:22.3:-:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:22.3:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:22.3:r1-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:22.3:r1:*:*:*:*:*:*
    • (no CPE)range: 21.1R1-EVO - 21.2R3-S8-EVO, 21.4R3-S7-EVO, 22.1R3-S6-EVO, 22.2R3-EVO, 22.3R2-EVO
    • (no CPE)range: 21.1-EVO

Patches

Vulnerability mechanics

References

1

News mentions

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