CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2021-40524
High (7.5) in pureftpd pure-ftpd. EPSS 4.3% chance of exploitation in the next 30 days.
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.)
Severity
- EPSS
- 4.3% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)
- CWE
- CWE-434
- Published
- Modified
- Record from
- the NVD, synced
Affected
- pureftpd:pure-ftpd
References
- https://github.com/jedisct1/pure-ftpd/commit/37ad222868e52271905b94afea4fc780d83294b4
- https://github.com/jedisct1/pure-ftpd/compare/1.0.49...1.0.50
- https://github.com/jedisct1/pure-ftpd/pull/158
- https://github.com/jedisct1/pure-ftpd/commit/37ad222868e52271905b94afea4fc780d83294b4
- https://github.com/jedisct1/pure-ftpd/compare/1.0.49...1.0.50