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Case File

CVE-2021-40524

HIGH · CVSS 7.5 EPSS 4.29% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-09-05 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. Public exploit code or proof-of-concept references have been detected in its references. It may lead to a denial-of-service condition.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-40524
Severity
HIGH
CVSS
7.5
EPSS
4.29%

Original NVD 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.)

Related CVEs

Other vulnerabilities affecting the same vendor(s)