CVE-2025-27889

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.

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.

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