CVE-2021-47865
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.
- Score
- CVSS 4.0 8.7 High
- Status
- Deferred - disclosure@vulncheck.com
- Published
- 2026-01-21
- Last modified
- 2026-04-07
- Weaknesses
- CWE-770
Affected products
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
