Endian Firewall 3.3.25 Regular Expression logs_openvpn.cgi open Date os command injection

Summaryinfo

A vulnerability labeled as critical has been found in Endian Firewall 3.3.25. This vulnerability affects the function Open of the file /cgi-bin/logs_openvpn.cgi of the component Regular Expression Handler. Such manipulation of the argument Date leads to os command injection. This vulnerability is documented as CVE-2026-34796. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Endian Firewall 3.3.25. It has been rated as critical. Affected by this issue is the function open of the file /cgi-bin/logs_openvpn.cgi of the component Regular Expression Handler. The manipulation of the argument DATE with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Endian Firewall version 3.3.25 and prior allow authenticated users to execute arbitrary OS commands via the DATE parameter to /cgi-bin/logs_openvpn.cgi. The DATE parameter value is used to construct a file path that is passed to a Perl open() call, which allows command injection due to an incomplete regular expression validation.

The weakness was released by Alex Williams. The advisory is shared for download at help.endian.com. This vulnerability is handled as CVE-2026-34796 since 03/30/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/02/2026). The MITRE ATT&CK project declares the attack technique as T1202.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Firewall Software

Vendor

• Endian

Name

• Firewall

Version

• 3.3.25

CPE 2.3info

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CPE 2.2info

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