CVE-2026-101967 PUBLISHED

Junos OS Evolved: PTX Series: An attacker controlled DHCP response causes root-level compromise when zero-touch provisioning is used

Assigner: juniper
Reserved: 28.09.2026 Published: 14.10.2026 Updated: 15.10.2026

An OS Command Injection vulnerability in the bootzd zero-touch provisioning daemon of Juniper Networks Junos OS Evolved allows an unauthenticated attacker on the management LAN to execute commands as root via crafted DHCP response.

Metrics

CVSS Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:H
CVSS Score: 9.3

Product Status

Vendor Juniper Networks
Product Junos OS Evolved
Versions Default: unaffected
  • affected from 24.4 to 24.4R2-S5-EVO (excl.)
  • affected from 25.2 to 25.2R2-S2-EVO (excl.)
  • affected from 25.4 to 25.4R1-S3-EVO (excl.)
  • affected from 26.2 to 26.2R1-S2-EVO (excl.)
  • Version 23.4X100 is affected
  • affected from 25.2X100 to 25.2X100-D35-EVO (excl.)
  • affected from 25.4X300 to 25.4X300-D40-EVO (excl.)

Exploits

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

Workarounds

There are no known workarounds for this issue.

Solutions

The following software releases have been updated to resolve this specific issue:

Junos OS Evolved: 23.2R2-S7.7-EVO, 23.4R2-S8.11-EVO, 24.2R2-S5.6-EVO, 24.4R2-S5-EVO, 25.2R2-S2-EVO, 25.2X100-D35-EVO, 25.4R1-S3-EVO, 25.4R2-EVO, 25.4X300-D40-EVO, 26.2R1-S2-EVO, 26.2R2-EVO, 26.4R1-EVO, and all subsequent releases.

Note: For Junos OS Evolved releases 23.2-EVO, 23.4-EVO, and 24.2-EVO, specific respins have been referenced. Previously published versions of these releases have been rebuilt to resolve the security vulnerabilities identified in this advisory.

References

Problem Types

  • CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE