CVE-2026-102031

CRITICALCVSS 9.8/10EPSS 2.10%

Last modified

CVE-2026-102031 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An OS Command Injection vulnerability in TACACS of Juniper Networks Junos OS Evolved allows a low-privileged TACACS+-authenticated user to execute commands with root privileges when periodic TACACS+ authorization-refresh is enabled.. EPSS estimates a 2.10% chance of exploitation in the next 30 days.

Description

An OS Command Injection vulnerability in TACACS of Juniper Networks Junos OS Evolved allows a low-privileged TACACS+-authenticated user to execute commands with root privileges when periodic TACACS+ authorization-refresh is enabled.

Metrics

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Juniper NetworksJunos OS Evolved< 23.2R2-S7.7-EVO; >= 23.4, < 23.4R2-S8.11-EVO; >= 24.2, < 24.2R2-S5.6-EVO; >= 24.4, < 24.4R2-S5-EVO; >= 25.2, < 25.2R2-S2-EVO; >= 25.4, < 25.4R1-S3-EVO; >= 26.2, < 26.2R1-S2-EVO; 23.4X100; >= 25.2X100, < 25.2X100-D35-EVO; >= 25.4X300, < 25.4X300-D40-EVO

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-102031?
An OS Command Injection vulnerability in TACACS of Juniper Networks Junos OS Evolved allows a low-privileged TACACS+-authenticated user to execute commands with root privileges when periodic TACACS+ authorization-refresh is enabled.
How severe is CVE-2026-102031?
CVE-2026-102031 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.10% probability of exploitation in the next 30 days.
How do I fix CVE-2026-102031?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST