CVE-2021-47865

HIGH SEVERITY

CVSS Score & Metrics

Base Score

7.5 / 10

Vector String

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

Vulnerability Description

ProFTPD 1.3.7a contains a denial of service vulnerability that allows attackers to overwhelm the server by creating multiple simultaneous FTP connections. Attackers can repeatedly establish connections using threading to exhaust server connection limits and block legitimate user access.

Vulnerability Details

Published Date

January 21, 2026

Last Modified

January 26, 2026

CWE ID

CWE-770

Source

NVD

Vendor

ProFTPD

Product

ProFTPD

External References

http://www.proftpd.org/
https://github.com/proftpd/proftpd/issues/1298
https://www.exploit-db.com/exploits/49697
https://www.vulncheck.com/advisories/proftpd-a-remote-denial-of-service

CVE-2021-47865

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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