CVE-2021-40524

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

In Pure-FTPd before 1.0.50, an incorrect max_filesize quota mechanism in the server allows attackers to upload files of unbounded size, which may lead to denial of service or a server hang. This occurs because a certain greater-than-zero test does not anticipate an initial -1 value. (Versions 1.0.23 through 1.0.49 are affected.)

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-434

Affected software

No affected versions have been published.

Timeline

Published: Sep 5, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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