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

Summaryinfo

A vulnerability has been found in Endian Firewall 3.3.25 and classified as critical. Affected is the function Open of the file /cgi-bin/logs_firewall.cgi of the component Regular Expression Handler. Performing a manipulation of the argument Date results in os command injection. This vulnerability was named CVE-2026-34793. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Endian Firewall 3.3.25. It has been classified as critical. This affects the function open of the file /cgi-bin/logs_firewall.cgi of the component Regular Expression Handler. The manipulation of the argument DATE with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Endian Firewall version 3.3.25 and prior allow authenticated users to execute arbitrary OS commands via the DATE parameter to /cgi-bin/logs_firewall.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 presented by Alex Williams. It is possible to read the advisory at help.endian.com. This vulnerability is uniquely identified as CVE-2026-34793 since 03/30/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/02/2026). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

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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