How to fix EUVD-2026-18270?

Within 24 hours: Inventory all Endian Firewall 3.3.25 and earlier deployments and isolate from untrusted networks if possible. Within 7 days: Restrict administrative access to /cgi-bin/logs_ids.cgi via firewall rules, disable unused management interfaces, and implement network segmentation to limit appliance connectivity. Simultaneously contact Endian for patch availability and EoL status for affected versions. Within 30 days: Develop a firmware upgrade or appliance replacement plan, as no vendor-released patch identified at time of analysis; migrate to supported Endian versions or alternative firewall platforms with active security support.

Is Command Injection affected by EUVD-2026-18270?

Endian Firewall versions 3.3.25 and earlier contain a remote command execution vulnerability accessible to authenticated users, enabling attackers to execute arbitrary operating system commands with firewall privileges.

EUVD-2026-18270

| CVE-2026-34794 HIGH

2026-04-02 [email protected]

GHSA-m82g-g4wp-pm4m

8.7

CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Apr 02, 2026 - 15:22 vuln.today

EUVD ID Assigned

Apr 02, 2026 - 15:22 euvd

EUVD-2026-18270

CVE Published

Apr 02, 2026 - 15:16 nvd

HIGH 8.7

Description

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.

Analysis

Remote command execution in Endian Firewall 3.3.25 and earlier allows authenticated attackers to execute arbitrary OS commands with firewall appliance privileges via command injection in the DATE parameter of /cgi-bin/logs_ids.cgi. The vulnerability stems from incomplete regular expression validation before passing user input to Perl's open() function. …

Remediation

Within 24 hours: Inventory all Endian Firewall 3.3.25 and earlier deployments and isolate from untrusted networks if possible. Within 7 days: Restrict administrative access to /cgi-bin/logs_ids.cgi via firewall rules, disable unused management interfaces, and implement network segmentation to limit appliance connectivity. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.2

CVSS: +44

POC: 0

EUVD-2026-18270 vulnerability details – vuln.today

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EUVD-2026-18270

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Analysis

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EUVD-2026-18270

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External POC / Exploit Code