Endian Firewall 3.3.25 Regular Expression /cgi-bin/logs_log.cgi open Date os command injection

Summaryinfo

A vulnerability, which was classified as critical, was found in Endian Firewall 3.3.25. This impacts the function Open of the file /cgi-bin/logs_log.cgi of the component Regular Expression Handler. Such manipulation of the argument Date leads to os command injection. This vulnerability is uniquely identified as CVE-2026-34795. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Endian Firewall 3.3.25 and classified as critical. Affected by this issue is the function open of the file /cgi-bin/logs_log.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_log.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 disclosed by Alex Williams. The advisory is available at help.endian.com. This vulnerability is handled as CVE-2026-34795 since 03/30/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/02/2026). This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

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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