Vulnerability · Published Jun 5, 2026 · Assigned by Arista

CVE-2026-25622Arista Edge Threat Management NGFW Captive Portal Custom Handler Command Injection

Medium 6.0

In plain English

A medium-severity OS command injection 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 9.3% (higher than 95% of all known vulnerabilities).

Severity (CVSS 3.1)6.0Medium

Exploit odds (30 days)9.3%top 4.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

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-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/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