# CVE-2025-34300: Lighthouse Studio - RCE

> Live exploitation tracking for CVE-2025-34300 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2025-34300

## Key facts

- **Exploitation phase:** Limited Exploitation. The vulnerability is known but shows very limited attacker interest or exploitation activity.
- **CVSS score:** 10.0
- **Public exploit available:** Yes
- **Affected products:** Sawtooth Software Lighthouse Studio
- **Weaknesses:** CWE-20 (Improper Input Validation); CWE-1336 (Improper Neutralization of Special Elements Used in a Template Engine)
- **Tags:** web_application

## Description

A template injection vulnerability exists in Sawtooth Software’s Lighthouse Studio versions prior to 9.16.14 via the  ciwweb.pl http://ciwweb.pl/  Perl web application. Exploitation allows an unauthenticated attacker can execute arbitrary commands.

## CrowdSec analysis

[CVE-2025-34300](https://euvd.enisa.europa.eu/vulnerability/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.

## Timeline

- 2025-07-16: CVE Published. CVE-2025-34300 is published to NVD.
- 2025-07-24: Rule Released. CrowdSec releases a rule to detect CVE-2025-34300 exploitation attempts against the CrowdSec Network.
- 2025-08-07: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2025-34300 for the first time.

## References

- https://sawtoothsoftware.com/resources/software-downloads/lighthouse-studio
- https://slcyber.io/assetnote-security-research-center/rce-in-the-most-popular-survey-software-youve-never-heard-of/
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-34300.yaml

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2025-34300) follows observed exploitation activity for CVE-2025-34300. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.