Is CVE-2026-25623 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-25623 being exploited in the wild.

How severe is CVE-2026-25623?

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-2026-25623?

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-2026-25623 attacked?

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

Am I affected by CVE-2026-25623?

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-2026-25623: Arista NGFW command injection in browser management pipeline

CVE-2026-25623 · Severity: medium · CVSS 6 · Published 2026-06-05

A security vulnerability exists in the Arista Edge Threat Management Next Generation Firewall, a device used to secure corporate networks and manage internet traffic. An authorized administrator could exploit a flaw in the management interface to run unauthorized commands on the underlying system. This could allow an attacker with administrative credentials to gain deeper access to the device's operating system, potentially compromising the integrity of the security appliance.

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

Quick answers

Is CVE-2026-25623 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-25623 being exploited in the wild.
How severe is CVE-2026-25623?: 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-2026-25623?: 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-2026-25623 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-25623?: 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

An OS command injection vulnerability (CWE-78) exists in the browser management pipeline of Arista Edge Threat Management - Arista Next Generation Firewall (NGFW). The flaw stems from improper input validation of parameters passed through the management interface. An attacker must be authenticated with administrative privileges to exploit this vulnerability. Successful exploitation allows the attacker to execute arbitrary code or terminal scripts with the permissions of the underlying system, potentially leading to full system compromise. Arista has assigned a CVSS v4.0 score of 7.0 (High) and a CVSS v3.1 score of 6.0 (Medium).

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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