Lighthouse Studio - RCE (CVE-2025-34300)

CVE-2025-34300 is a critical template injection vulnerability in Sawtooth Software’s Lighthouse Studio versions prior to 9.16.14, specifically within the ciwweb.pl Perl web application. This flaw allows unauthenticated attackers to execute arbitrary commands on the affected system, potentially leading to full remote compromise and control. Attackers could leverage this vulnerability to steal data, disrupt operations, or deploy further malicious payloads.

CrowdSec has been tracking this vulnerability and its exploits since 24th of July 2025.

Data from the CrowdSec community indicates that exploitation of CVE-2025-34300 is highly selective and intelligence-driven. Threat actors use advanced reconnaissance and carefully choose their targets, often as part of sophisticated campaigns or advanced persistent threat operations. CrowdSec network telemetry also shows that exploitation of CVE-2025-34300 has significantly declined over the past week. Attack volumes are well below the long-term average, suggesting attackers are rapidly losing interest. The vulnerability appears to be falling out of active use across most threat landscapes.

Attackers exploit the Lighthouse Studio ciwweb.pl endpoint by injecting Perl code into the hid_Random_ACARAT query parameter, enabling unauthenticated remote code execution via unsafe eval usage.