CVE-2021-47865

HIGH

7.5

Descripcion

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.

Detalles CVE

Puntuacion CVSS v3.17.5

SeveridadHIGH

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

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado1/21/2026

Ultima modificacion1/26/2026

Fuentenvd

Avistamientos honeypot0

Debilidades (CWE)

CWE-770

Referencias

http://www.proftpd.org/(disclosure@vulncheck.com)

https://github.com/proftpd/proftpd/issues/1298(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/49697(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/proftpd-a-remote-denial-of-service(disclosure@vulncheck.com)

Correlaciones IOC

Sin correlaciones registradas

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