# CVE-2025-47813: Wing FTP Server - Information Disclosure

> Live exploitation tracking for CVE-2025-47813 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-2025-47813

## Key facts

- **Exploitation phase:** Background Noise. Continuous low-level scanning or exploitation attempts are observed, mostly opportunistic and automated.
- **CVSS score:** 4.3
- **Public exploit available:** Yes
- **Affected products:** WFTPServer Wing FTP Server
- **Weaknesses:** CWE-209 (Generation of Error Message Containing Sensitive Information)
- **Tags:** file_sharing

## Description

loginok.html in Wing FTP Server before 7.4.4 discloses the full local installation path of the application when using a long value in the UID cookie.

## CrowdSec analysis

[CVE-2025-47813](https://euvd.enisa.europa.eu/vulnerability/CVE-2025-47813) is an information disclosure vulnerability in Wing FTP Server prior to version 7.4.4, where the loginok.html page reveals the full local installation path when a long UID cookie value is used. Attackers could leverage this information to facilitate further attacks, such as path traversal or targeted exploitation based on the server's directory structure.

CrowdSec has been tracking this vulnerability and its exploits since 16th of July 2025.

According to CrowdSec data, while opportunistic exploitation dominates, a portion of threat actors trying to exploit CVE-2025-47813 apply basic targeting methods such as port or service detection. This indicates emerging patterns of selective targeting.
Additionally, according to week-over-week analysis by CrowdSec, exploitation of CVE-2025-47813 is surging. Attack volumes are spiking well above historical norms, indicating widespread and escalating interest from threat actors. CVE-2025-47813 is currently experiencing high visibility and active exploitation across the internet.

Attackers exploit this vulnerability by sending POST requests to `/loginok.html` with a specially crafted overlong `UID` cookie, causing the server to disclose internal filesystem paths in error messages.

## Timeline

- 2025-07-10: CVE Published. CVE-2025-47813 is published to NVD.
- 2025-07-16: Rule Released. CrowdSec releases a rule to detect CVE-2025-47813 exploitation attempts against the CrowdSec Network.
- 2025-07-21: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2025-47813 for the first time.
- 2026-03-16: CISA KEV. CVE-2025-47813 is added to the Known Exploited Vulnerabilities catalog by CISA.
- 2026-03-30: CISA Remediation Deadline. Expiration of the CISA remediation deadline as described in [BOD 22-01](https://www.cisa.gov/news-events/directives/bod-22-01-reducing-significant-risk-known-exploited-vulnerabilities).

## References

- https://www.wftpserver.com
- https://github.com/MrTuxracer/advisories/blob/master/CVEs/CVE-2025-47813.txt
- https://www.rcesecurity.com/2025/06/what-the-null-wing-ftp-server-rce-cve-2025-47812/
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-47813.yaml

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2025-47813) follows observed exploitation activity for CVE-2025-47813. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.