OS Command Injection Vulnerability in Junos OS Evolved by Juniper Networks
CVE-2026-102031

9.3CRITICAL

Key Information:

Vendor

Juniper Networks
Status
Junos Os Evolved
Vendor
CVE Published:
14 October 2026

Badges

👾 Exploit Exists

What is CVE-2026-102031?

An OS Command Injection vulnerability exists within the TACACS component of Juniper Networks' Junos OS Evolved. This flaw allows a TACACS+-authenticated user with low privileges to exploit the system by executing commands with root-level permissions, particularly when the TACACS+ authorization-refresh feature is active. This presents a significant risk, enabling potential unauthorized access and control over system operations.

Affected Version(s)

Junos OS Evolved 0 < 23.2R2-S7.7-EVO

Junos OS Evolved 23.4 < 23.4R2-S8.11-EVO

Junos OS Evolved 24.2 < 24.2R2-S5.6-EVO

References

https://supportportal.juniper.net/JSA112250
vendor-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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