CVE

CVE-2021-40524

7.5

CVSS

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.)

Attack Vector

Privileges Req.

User Interaction

Updated Sep 26, 2026View on NVD →

S4E scanner

highProduct Based Network Vulnerabilities~10 seconds

CVE-2021-40524 Scanner

CVE-2021-40524 Scanner - Arbitrary File Upload vulnerability in Pure-FTPd

Used 2.3k times · 3.3k assets checked · domain, subdomain, ipv4

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