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

Summaryinfo

A vulnerability, which was classified as critical, has been found in Endian Firewall 3.3.25. This affects the function Open of the file /cgi-bin/logs_ids.cgi of the component Regular Expression Handler. This manipulation of the argument Date causes os command injection. This vulnerability is handled as CVE-2026-34794. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Endian Firewall 3.3.25 and classified as critical. Affected by this vulnerability is the function open of the file /cgi-bin/logs_ids.cgi of the component Regular Expression Handler. The manipulation of the argument DATE with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect 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_ids.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 at help.endian.com. This vulnerability is known as CVE-2026-34794 since 03/30/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/02/2026). MITRE ATT&CK project uses the attack technique T1202 for this issue.

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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