RCE in Arista Ng Firewall

CVE-2026-25622

A Captive Portal Custom Handler command injection vulnerability exists in Arista Edge Threat Management - Arista Next Generation Firewall (NGFW). On affected platforms, an administrative account logged into the user interface can exploit this input handling behavior to execute arbitrary platform shell commands.

Vulnerability class: Command Injection (OS Command Injection)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:L.

EPSS exploit prediction

EPSS: 0.010 (61.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-25622: fell from 0.099 to 0.010.

EPSS over last 30 days · oldest: 0.099 · newest: 0.010 · change: -0.089

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-25622?
CVE-2026-25622 is a medium-severity vulnerability in Arista Ng Firewall, classified under OS Command Injection. CVSS score: 6.0/10. Published 2026-06-05.
How severe is CVE-2026-25622?
Medium severity. CVSS v3 base score is 6.0 out of 10.