CVE-2025-27889: wing ftp server — Exploit

Description

Wing FTP Server before 7.4.4 does not properly validate and sanitize the url parameter of the downloadpass.html endpoint, allowing injection of an arbitrary link. If a user clicks a crafted link, this discloses a cleartext password to the attacker.

Is your site exposed to CVE-2025-27889?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

3.4

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N

Weakness Type (CWE)

CWE-15 CWE-15

Affected Products

Vendor	Product	Versions
wftpserver	wing_ftp_server	< 7.4.4

References

Exploits

https://github.com/MrTuxracer/advisories/blob/master/CVEs/CVE-2025-27889.txt https://www.rcesecurity.com/2025/06/what-the-null-wing-ftp-server-rce-cve-2025-47812/ https://www.rcesecurity.com/2025/06/what-the-null-wing-ftp-server-rce-cve-2025-47812/

Other References

https://www.wftpserver.com/wftpserver.htm

Frequently Asked Questions

What is CVE-2025-27889? +

Wing FTP Server before 7.4.4 does not properly validate and sanitize the url parameter of the downloadpass.html endpoint, allowing injection of an arbitrary link. If a user clicks a crafted link, this discloses a cleartext password to the attacker. It has a CVSS v3.1 base score of 3.4 (LOW).

How severe is CVE-2025-27889? +

CVE-2025-27889 has a CVSS v3.1 score of 3.4 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2025-27889? +

CVE-2025-27889 affects products from wftpserver, specifically: wing_ftp_server. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-27889? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-66065

Ouroboros is a local-first runtime for AI coding agents that records their actions and applies user-defined policies to constrain behavior. …

CVE-2026-19593

OpenAI Codex Desktop for Windows and macOS automatically inspected Git metadata and working-tree status when a user opened a workspace. …

CVE-2026-0418

Insufficient configuration management in the listed devices allows authenticated administrators connected to the local network to tamper with the system.

CVE-2025-64726

Socket Firewall is an HTTP/HTTPS proxy server that intercepts package manager requests and enforces security policies by blocking dangerous packages. …

CVE-2025-68403

An external control of system or configuration setting vulnerability has been reported to affect QuRouter. If a local attacker gains …

CVE-2026-103442

External control of system or configuration setting vulnerability in The Wikimedia Foundation MediaWiki CentralAuth extension allows Code Injection. This issue …

CVE-2025-27889