Is CVE-2026-25622 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-25622 being exploited in the wild.

How severe is CVE-2026-25622?

Medium severity, with a CVSS score of 6, published 5 June 2026.

Which products and versions are affected?

Arista Networks Next Generation Firewall (NGFW).

Is there a fix for CVE-2026-25622?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-25622 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-25622?

Check whether you run Arista Networks Next Generation Firewall. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-25622: Arista NGFW command injection in Captive Portal Custom Handler

CVE-2026-25622 · Severity: medium · CVSS 6 · Published 2026-06-05

A security vulnerability has been identified in Arista's Next Generation Firewall, a device used to secure corporate networks and manage user access. An authorized administrator could potentially bypass security controls to run unauthorized commands directly on the device's operating system. While this requires administrative access to exploit, it could allow a malicious insider or a compromised admin account to gain full control over the firewall's underlying system.

Technologies: Arista Networks Next Generation Firewall. Vendors: Arista Networks.

Quick answers

Is CVE-2026-25622 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-25622 being exploited in the wild.
How severe is CVE-2026-25622?: Medium severity, with a CVSS score of 6, published 5 June 2026.
Which products and versions are affected?: Arista Networks Next Generation Firewall (NGFW).
Is there a fix for CVE-2026-25622?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-25622 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-25622?: Check whether you run Arista Networks Next Generation Firewall. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A command injection vulnerability (CWE-78) exists in the Captive Portal Custom Handler component of Arista Edge Threat Management - Arista Next Generation Firewall (NGFW). The flaw stems from improper neutralization of special elements used in OS commands within the user interface's input handling logic. An attacker must have an administrative account and be logged into the web-based management interface to exploit this vulnerability. Successful exploitation allows the execution of arbitrary platform shell commands with the privileges of the web service, potentially leading to full system compromise. Arista has released security advisory 0133 to address this issue.

Affected products

Arista Networks Next Generation Firewall (NGFW)

Timeline

2026-06-05: disclosed
2026-06-05: advisory

References

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

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