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Advisory severityHigh8.8Juniper Networks Updated

High [CVE-2026-102059] Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in the phone-home daemon (phcd) of Juniper Networks Junos OS and Junos OS Evolved on EX Series, SRX Series, and QFX Series allows an adjacent unauthenticated attacker to execute arbitrary commands with root privileges via a rogue DHCP server

This high-severity Juniper Networks advisory covers CVE-2026-102059 affecting Junos OS Evolved.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-102059 Source published Source updated

VulniPulse record published Record updated

CVE-2026-102059
Affected products & platforms
Juniper NetworksJunosJunos OS Evolved
Open source advisory

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Summary

An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in the phone-home daemon (phcd) of Juniper Networks Junos OS and Junos OS Evolved on EX Series, SRX Series, and QFX Series allows an adjacent unauthenticated attacker to execute arbitrary commands with root privileges via a rogue DHCP server.

Affected products named by the advisory: EX.

Affected versions
  • Junos OS before 23.2R2-S7.7
  • Junos OS 23.4 before 23.4R2-S8.13
  • Junos OS 24.2 before 24.2R2-S5.5
  • Junos OS 24.4 before 24.4R2-S5
  • Junos OS 25.2 before 25.2R2-S2
  • Junos OS 25.4 before 25.4R1-S3
  • Junos OS 26.2 before 26.2R1-S2
  • Junos OS Evolved before 23.2R2-S7.7-EVO
  • Junos OS Evolved 23.4 before 23.4R2-S8.11-EVO
  • Junos OS Evolved 24.2 before 24.2R2-S5.6-EVO
  • Junos OS Evolved 24.4 before 24.4R2-S5-EVO
  • Junos OS Evolved 25.2 before 25.2R2-S2-EVO

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Fixed versions
  • 23.2R2-S7.7
  • 23.4R2-S8.13
  • 24.2R2-S5.5
  • 24.4R2-S5
  • 25.2R2-S2
  • 25.4R1-S3
  • 26.2R1-S2
  • 23.2R2-S7.7-EVO
  • 23.4R2-S8.11-EVO
  • 24.2R2-S5.6-EVO
  • 24.4R2-S5-EVO
  • 25.2R2-S2-EVO

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Mitigation

Upgrade to a fixed release: 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S5, 25.2R2-S2, 25.4R1-S3. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Discussion(0)

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