CVE-2026-34795
Published: 02 April 2026
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_log.cgi. The DATE parameter value is used to construct a file path that is passed to a Perl open() call, which…
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allows command injection due to an incomplete regular expression validation.
Mitigating Controls (NIST 800-53 r5)AI
Implements comprehensive input validation at entry points like the DATE parameter, directly preventing command injection from incomplete regex checks.
Requires timely identification, testing, and deployment of patches to remediate the specific command injection flaw in logs_log.cgi.
Enforces least privilege on the CGI process to limit the scope and impact of any successfully injected OS commands.
Security SummaryAI
CVE-2026-34795 is a command injection vulnerability (CWE-78) affecting Endian Firewall versions 3.3.25 and prior. The flaw exists in the /cgi-bin/logs_log.cgi script, where the DATE parameter is used to construct a file path passed directly to a Perl open() call. Due to incomplete regular expression validation of the parameter, attackers can inject arbitrary OS commands. The vulnerability received a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) and was published on 2026-04-02.
An authenticated user with low privileges can exploit this vulnerability remotely over the network with low complexity and no user interaction required. Successful exploitation allows execution of arbitrary operating system commands on the firewall appliance, potentially leading to full compromise including high-impact confidentiality, integrity, and availability violations such as data theft, modification, or denial of service.
Mitigation details are provided in vendor and third-party advisories, including the Endian Community help section at https://help.endian.com/hc/en-us/sections/360004371358-Community and the VulnCheck advisory at https://www.vulncheck.com/advisories/endian-firewall-cgi-bin-logs-log-cgi-date-perl-command-injection. Security practitioners should consult these resources for patch availability, workarounds, and upgrade guidance.
Details
- CWE(s)
Affected Products
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Command injection vulnerability in public-facing CGI script (/cgi-bin/logs_log.cgi) on firewall web interface enables exploitation of public-facing application (T1190) and arbitrary OS command execution via Unix Shell (T1059.004).