CVE-2021-40239
A Buffer Overflow vulnerability exists in the latest version of Miniftpd in the do_retr function...
A Buffer Overflow vulnerability exists in the latest version of Miniftpd in the do_retr function in ftpproto.c
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A Buffer Overflow vulnerability exists in the latest version of Miniftpd in the do_retr function in ftpproto.c
- Record
CVE-2021-40239- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-120
- Updated
- 2026-11-02
CVE List No score
A Buffer Overflow vulnerability exists in the latest version of Miniftpd in the do_retr function in ftpproto.c
- Record
CVE-2021-40239- Updated
- 2026-11-02
EUVDEUVD-2021-27423 No score
A Buffer Overflow vulnerability exists in the latest version of Miniftpd in the do_retr function in ftpproto.c
- Record
EUVD-2021-27423- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-x5r4-hffg-79fr No score
A Buffer Overflow vulnerability exists in the latest version of Miniftpd in the do_retr function...
A Buffer Overflow vulnerability exists in the latest version of Miniftpd in the do_retr function in ftpproto.c
- Record
GHSA-x5r4-hffg-79fr- Weakness
- CWE-120
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-40239 is a critical vulnerability (CVSS 9.8) in Miniftpd Project Miniftpd, published October 11, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.41%, the 72nd percentile. No source names a fixed version.