Vulnerability · Published Jun 5, 2026 · Assigned by Arista

CVE-2026-25624Arista Edge Threat Management NGFW UI Administrative Cross-Site Scripting

Medium 5.7

In plain English

A medium-severity cross-site scripting in Arista Edge Threat Management - Arista Next Generation Firewall (NGFW) from Arista Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).

Severity (CVSS 3.1)5.7Medium

Exploit odds (30 days)0.2%top 95.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

An administrative cross-site scripting (XSS) vulnerability exists in the web user interface dashboard layout of Arista Edge Threat Management - Arista Next Generation Firewall (NGFW). Unvalidated user-supplied variables are echoed back to administrative profiles, facilitating vector payload processing behavior controls.

Affected products (as reported)

Vendor	Product	Versions
Arista Networks	Arista Edge Threat Management - Arista Next Generation Firewall (NGFW)	0 – through 17.4.0

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:L

References

https://www.arista.com/en/support/advisories-notices/security-advisory/23399-security-advisory-0133 vendor-advisory