CVE-2026-101967
Junos OS Evolved: PTX Series: An attacker controlled DHCP response causes root-level compromise when zero-touch provisioning is used
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.
Fixes and workarounds
Fix
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.
Source: CNA: juniperWorkaround
There are no known workarounds for this issue.
Source: CNA: juniperAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Junos OS Evolved Juniper Networks |
≥ 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) Other versions: unaffected |
CNA: juniper |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 8.8 high |
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CNA: juniper |
| 4.0 / 9.3 critical |
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 | CNA: juniper |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://supportportal.juniper.net/JSA112250CNA: juniper · vendor-advisory
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