--- title: "CVE-2026-102031: Juniper Networks Junos OS Evolved - OS Command Injection" description: "Juniper Networks Junos OS Evolved contains an OS command injection caused by improper handling in TACACS, letting low-privileged TACACS+-authenticated users execute commands with root privileges when periodic TACACS+ authorization-refresh is enabled." url: https://panop.io/threat-heartbeat/CVE-2026-102031/ --- # CVE-2026-102031 Juniper Networks Junos OS Evolved - OS Command Injection Juniper Networks Junos OS Evolved contains an OS command injection caused by improper handling in TACACS, letting low-privileged TACACS+-authenticated users execute commands with root privileges when periodic TACACS+ authorization-refresh is enabled. CVSS base score 9.8 /10 Critical CISA KEV Not listed Public exploit None known Authentication Not required [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-102031) ## Details Type OS Command Injection Impact Remote Code Execution, Privilege Escalation CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Published 14 October 2026 Updated 15 October 2026 Weakness [CWE-78](https://cwe.mitre.org/data/definitions/78.html) ## Vendor fix Update to the latest Junos OS Evolved version with the fix applied. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-102031](https://nvd.nist.gov/vuln/detail/CVE-2026-102031) - [https://supportportal.juniper.net/JSA112250](https://supportportal.juniper.net/JSA112250) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)