CVE-2026-25620

Ng Firewall vulnerability

CVSS

6.0

EPSS

9.9%

EPSS pct

95th

Exploited

No known

An encrypted password command injection vulnerability exists in the Captive Portal application framework of Arista Edge Threat Management - Arista Next Generation Firewall (NGFW). This issue uniquely affects version 17.4.0; earlier software releases are not exposed.

Affected vendor

Arista

Affected product

Ng Firewall

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:L

Weakness type (CWE)

CWE-78 — OS Command Injection

Published

2026-06-05

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring high privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, low impact to integrity, low impact to availability.

Its EPSS score of 9.9% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-2026-25620

Confirm whether Arista Ng Firewall is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2026-25620.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2026-25620

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2026-25620 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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