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TI-2024-26456 Aliases CVE-2024-39522GHSA-x3hw-m9hx-m5ww

Junos OS Evolved: CLI parameter processing issue allows privilege escalation

Priority LOW 38CWE-78Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

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: * 22.3-EVO versions before 22.3R2-EVO, * 22.4-EVO versions before 22.4R1-S1-EVO, 22.4R2-EVO.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0025 16th percentileScored 2026-11-07
Fix Fixed Junos OS Evolved (Juniper Networks): 22.3R2-EVO, 22.4R1-S1-EVO, 22.4R2-EVO

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
JuniperJunos OS Evolved22.3-EVO to before 22.3R2-EVO; 22.4-EVO to before 22.4R1-S1-EVO, 22.4R2-EVO22.3R2-EVO, 22.4R1-S1-EVO, 22.4R2-EVOPatch availableCNA
  • Junos OS Evolved VendorJuniper Affected 22.3-EVO to before 22.3R2-EVO; 22.4-EVO to before 22.4R1-S1-EVO, 22.4R2-EVO Fixed in 22.3R2-EVO, 22.4R1-S1-EVO, 22.4R2-EVO Patch available CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:o:juniper:junos_os_evolved:22.3:-:*:*:*:*:*:*22.3VulnerableJuniper
cpe:2.3:o:juniper:junos_os_evolved:22.3:r1:*:*:*:*:*:*22.3 r1VulnerableJuniper
cpe:2.3:o:juniper:junos_os_evolved:22.3:r1-s1:*:*:*:*:*:*22.3 r1-s1VulnerableJuniper
cpe:2.3:o:juniper:junos_os_evolved:22.3:r1-s2:*:*:*:*:*:*22.3 r1-s2VulnerableJuniper
cpe:2.3:o:juniper:junos_os_evolved:22.4:-:*:*:*:*:*:*22.4VulnerableJuniper
cpe:2.3:o:juniper:junos_os_evolved:22.4:r1:*:*:*:*:*:*22.4 r1VulnerableJuniper
  • cpe:2.3:o:juniper:junos_os_evolved:22.3:-:*:*:*:*:*:* Versions 22.3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos_os_evolved:22.3:r1:*:*:*:*:*:* Versions 22.3 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos_os_evolved:22.3:r1-s1:*:*:*:*:*:* Versions 22.3 r1-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos_os_evolved:22.3:r1-s2:*:*:*:*:*:* Versions 22.3 r1-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos_os_evolved:22.4:-:*:*:*:*:*:* Versions 22.4 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos_os_evolved:22.4:r1:*:*:*:*:*:* Versions 22.4 r1 Vulnerable ·Juniper

Remediation

  • Fix · CNA Junos OS Evolved (Juniper Networks) Fixed in 22.3R2-EVO, 22.4R1-S1-EVO, 22.4R2-EVO

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Juniper Networks Junos OS Evolved — supportportal.juniper.net/JSA82975

    5 records Highest priority Priority LOW 5 LOW

    Other records, highest priority first

    • TI-2024-26458 Junos OS Evolved: CLI parameter processing issue allows privilege escalationPriority LOW 38
    • TI-2024-26457 Junos OS Evolved: CLI parameter processing issue allows privilege escalationPriority LOW 38
    • TI-2024-26455 Junos OS Evolved: CLI parameter processing issue allows privilege escalationPriority LOW 38
    Show all 5 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-39522
  2. 2026-10-03 Alias added: GHSA-x3hw-m9hx-m5ww

References

Advisory 1

  • TI-2026-17602 Junos OS Evolved: PTX Series: A vulnerability allows a unauthenticated, network-based attacker to execute code as root CVSS 4.0CRITICAL 9.3
  • TI-2026-17601 Junos OS and Junos OS Evolved: Configuration of a specific SSH option results in mgd crash CVSS 4.0MEDIUM 6.7
  • TI-2023-04136 Improper input validation in Juniper Junos OS CVSS 3.1HIGH 7.5
  • TI-2026-74215 Stack-based buffer overflow in Junos OS rpd triggered by BGP peers CVSS 4.0CRITICAL 9.3
  • TI-2026-74211 Authentication bypass in Juniper J-Web allows pre-auth CGI execution CVSS 4.0CRITICAL 9.3
  • TI-2021-00146 Junos OS and Junos OS Evolved: Upon receipt of a specific BGP FlowSpec message network traffic may be disrupted. CVSS 3.1CRITICAL 10.0
See all 249 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences