RCE in Juniper Networks Junos OS Evolved

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.

Vulnerability class: Command Injection (OS Command Injection)

Published .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-102031?
CVE-2026-102031 is a critical-severity vulnerability in Juniper Networks Junos OS Evolved, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-10-14.
How severe is CVE-2026-102031?
Critical severity. CVSS v3 base score is 9.8 out of 10.