wftpserver Wing FTP Server up to 7.4.3 Cookie loginok.html UID information exposure

Summaryinfo

A vulnerability marked as problematic has been reported in wftpserver Wing FTP Server up to 7.4.3. Affected by this vulnerability is an unknown functionality of the file loginok.html of the component Cookie Handler. The manipulation of the argument UID leads to information exposure. This vulnerability is traded as CVE-2025-47813. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in wftpserver Wing FTP Server up to 7.4.3. This issue affects an unknown code of the file loginok.html of the component Cookie Handler. The manipulation of the argument UID with an unknown input leads to a information exposure vulnerability. Using CWE to declare the problem leads to CWE-209. The product generates an error message that includes sensitive information about its environment, users, or associated data. Impacted is confidentiality. The summary by CVE is:

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.

It is possible to read the advisory at wftpserver.com. The identification of this vulnerability is CVE-2025-47813 since 05/10/2025. The exploitation is known to be easy. The attack may be initiated remotely. Technical details as well as a exploit are known. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

It is declared as attacked. By approaching the search of inurl:loginok.html it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 241999 (Wing FTP Server < 7.4.4 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 03/16/2026 with a due date of 03/30/2026:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Upgrading to version 7.4.4 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (241999) and EUVD (EUVD-2025-21020). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• File Transfer Software

Vendor

• wftpserver

Name

• Wing FTP Server

Version

• 7.4.0
• 7.4.1
• 7.4.2
• 7.4.3

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion