CVE-2026-101978

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OS Command Injection in Juniper Junos OS Evolved PTX Series

Publication date: 2026-10-14

Last updated on: 2026-10-16

Assigner: Juniper Networks, Inc.

Description

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

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-10-14

Last Modified

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-15

EPSS Evaluated

2026-10-18

NVD

CVE-2026-101978

EUVD

EUVD-2026-101427

Affected Vendors & Products

Vendor	Product	Version / Range
Juniper	Networks	Junos OS Evolved 24.4
Juniper	Networks	Junos OS Evolved 25.2
Juniper	Networks	Junos OS Evolved 25.4
Juniper	Networks	Junos OS Evolved 26.2
Juniper	Networks	Junos OS Evolved 23.4X100
Juniper	Networks	Junos OS Evolved 25.2X100
Juniper	Networks	Junos OS Evolved 25.4X300

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-78	The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Attack-Flow Graph

Executive Summary

This is an OS Command Injection vulnerability in the bootzd zero-touch provisioning daemon of Juniper Networks Junos OS Evolved on PTX Series. An unauthenticated attacker on the management LAN can execute commands as root by sending a crafted gRPC response.

Impact Analysis

An attacker could gain full root access to the device, allowing them to take complete control, install malware, steal data, or disrupt network operations. This could lead to unauthorized access to sensitive information or network infrastructure.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating compliance requirements for GDPR, HIPAA, and other regulations. It may result in legal penalties, reputational damage, and loss of trust due to compromised data integrity and confidentiality.

Mitigation Strategies

Apply the latest security patches from Juniper Networks for Junos OS Evolved on PTX Series to address the OS Command Injection vulnerability in the bootzd zero-touch provisioning daemon.

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