CVE-2021-35252 - CVE House
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Status published High CVE-2021-35252

Common Key Vulnerability in Serv-U FTP Server

Vulnerability Description

Common encryption key appears to be used across all deployed instances of Serv-U FTP Server. Because of this an encrypted value that is exposed to an attacker can be simply recovered to plaintext.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • SecureWorks Disclosure Team

Affected Vendor

Affected Software

Serv-U FTP Server
Vulnerable Versions:
15.3.0

Timeline

Official Publish: December 16th, 2022
Last Modified: April 17th, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weaknesses (CWE)