CVE-2026-34794

Endian · Endian Firewall version 3

A security vulnerability in Endian Firewall version 3 has been identified, which could allow a remote attacker to compromise the appliance and the network it protects.

Executive summary

Endian Firewall version 3 is vulnerable to a critical-range exploit that could result in full administrative compromise of the network security appliance.

Vulnerability

This vulnerability in Endian Firewall version 3 carries a CVSS score of 8.8. It likely permits a remote, unauthenticated attacker to bypass critical security checks, potentially leading to unauthorized command execution or the ability to modify the firewall's core security policies.

Business impact

The business impact of this vulnerability is severe, as the firewall is the first line of defense. A successful compromise could allow an attacker to gain a foothold in the network, leading to data exfiltration, ransomware deployment, or long-term persistence within the corporate infrastructure.

Remediation

Immediate Action: Install the latest security update for Endian Firewall version 3 immediately to mitigate the risk of remote exploitation.

Proactive Monitoring: Review all firewall configuration changes made in the last 30 days to ensure that no backdoors or unauthorized rules were added by a potential attacker.

Compensating Controls: Implement network segmentation to limit the potential damage if the firewall is compromised, and ensure that internal systems have their own robust security controls.

Exploitation status

Public Exploit Available: false

Analyst recommendation

The severity and urgency of this vulnerability cannot be overstated. Applying the vendor's security patch immediately is critical to maintaining the security of the network perimeter and protecting internal assets from unauthorized access.