CVE-2021-30047
VSFTPD 3.0.3 allows attackers to cause a denial of service due to limited number of connections...
VSFTPD 3.0.3 allows attackers to cause a denial of service due to limited number of connections allowed.
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
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
VSFTPD 3.0.3 allows attackers to cause a denial of service due to limited number of connections allowed.
- Record
CVE-2021-30047- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
CVE List No score
VSFTPD 3.0.3 allows attackers to cause a denial of service due to limited number of connections allowed.
- Record
CVE-2021-30047- Updated
- 2026-11-02
EUVDEUVD-2021-16991 No score
VSFTPD 3.0.3 allows attackers to cause a denial of service due to limited number of connections allowed.
- Record
EUVD-2021-16991- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-p8mp-mm84-7pqr
VSFTPD 3.0.3 allows attackers to cause a denial of service due to limited number of connections...
VSFTPD 3.0.3 allows attackers to cause a denial of service due to limited number of connections allowed.
- Record
GHSA-p8mp-mm84-7pqr- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Nuclei | vsftpd < 3.0.3 - DoS |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, Nuclei, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-30047 is a high vulnerability (CVSS 7.5) in Vsftpd Project Vsftpd, published August 22, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.21%, the 88th percentile. No source names a fixed version.