# CVE-2026-101967: Junos OS Evolved: PTX Series: An attacker controlled DHCP response causes root-level compromise when zero-touch provisioning is used

Status: published. Published: 2026-10-14. Updated: 2026-11-04.

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.

## Remediation

- 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: juniper)
- workaround: There are no known workarounds for this issue. (source: CNA: juniper)

## Affected products and versions

- Juniper Networks / Junos OS Evolved: ≥ 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). Source: CNA: juniper

## Severity and prioritization

- CVSS 3.1: 8.8 (high); CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; source: CNA: juniper

- CVSS 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; source: CNA: juniper

- CISA KEV: No listing in collected sources

- EPSS: 3.92% as of 2026-11-03; percentile 90.35%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-78

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://supportportal.juniper.net/JSA112250 (CNA: juniper; vendor-advisory)

## Provenance

- CNA: juniper: https://www.cve.org/CVERecord?id=CVE-2026-101967; retrieved 2026-11-04; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-101967; retrieved 2026-11-03; source updated Not reported

Revision: 3a4ea045993ecbca0fccc239043d99705bf54f28c3f21cffd31a7551b10bafd0

Canonical: https://y2.dev/cve/CVE-2026-101967

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