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CVE-2026-102059

Junos OS and Junos OS Evolved: EX Series, SRX Series, QFX Series: A rogue DHCP server causes root-level command execution when the phone-home client processes specific information

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S5, 25.2R2-S2, and 11 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Juniper Networks Junos OS

    fixed in 23.2R2-S7.7; From 23.4 · fixed in 23.4R2-S8.13; From 24.2 · fixed in 24.2R2-S5.5; From 24.4 · fixed in 24.4R2-S5; From 25.2 · fixed in 25.2R2-S2; From 25.4 · fixed in 25.4R1-S3; From 26.2 · fixed in 26.2R1-S2

  • Juniper Networks Junos OS Evolved

    fixed in 23.2R2-S7.7-EVO; From 23.4 · fixed in 23.4R2-S8.11-EVO; From 24.2 · fixed in 24.2R2-S5.6-EVO; From 24.4 · fixed in 24.4R2-S5-EVO; From 25.2 · fixed in 25.2R2-S2-EVO; From 25.4 · fixed in 25.4R1-S3-EVO; From 26.2 · fixed in 26.2R1-S2-EVO; From 25.2X100 · fixed in 25.2X100-D35-EVO; From 25.4X300 · fixed in 25.4X300-D40-EVO

References 1

supportportal.juniper.net