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CVE-2026-102059

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

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 8.7 · High · EPSS 3.9% · Fix available

Published
Updated

Affected products and versions

  • junos os

    Versions
    • ≥ 0, < 23.2R2-S7.7: Affected (custom)
    • ≥ 23.4, < 23.4R2-S8.13: Affected (custom)
    • ≥ 24.2, < 24.2R2-S5.5: Affected (custom)
    • ≥ 24.4, < 24.4R2-S5: Affected (custom)
    • ≥ 25.2, < 25.2R2-S2: Affected (custom)
    • ≥ 25.4, < 25.4R1-S3: Affected (custom)
    • ≥ 26.2, < 26.2R1-S2: Affected (custom)

    Update to 23.2R2-S7.7

  • junos os evolved

    Versions
    • ≥ 0, < 23.2R2-S7.7-EVO: Affected (custom)
    • ≥ 23.4, < 23.4R2-S8.11-EVO: Affected (custom)
    • ≥ 24.2, < 24.2R2-S5.6-EVO: Affected (custom)
    • ≥ 24.4, < 24.4R2-S5-EVO: Affected (custom)
    • ≥ 25.2, < 25.2R2-S2-EVO: Affected (custom)
    • ≥ 25.4, < 25.4R1-S3-EVO: Affected (custom)
    • ≥ 26.2, < 26.2R1-S2-EVO: Affected (custom)
    • 23.4X100: Affected (custom)
    • ≥ 25.2X100, < 25.2X100-D35-EVO: Affected (custom)
    • ≥ 25.4X300, < 25.4X300-D40-EVO: Affected (custom)

    Update to 23.2R2-S7.7-EVO; Update to 24.2R2-S5.6-EVO

Original sources

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