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UK Cyber Defence
VulnerabilityAwaiting Analysis

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.

CRITICAL 9.3EPSS 2.10%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.10%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 4.0
9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS
2.10% probability · 82th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-78
Source
sirt@juniper.net
EPSS trend
0%3%5%15 October 2026: 2.10%26 October 2026: 2.10%15 October 202626 October 2026

EPSS moved from 2.1% on 15 October 2026 to 2.1% on 26 October 2026.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.