CVE-2021-22009
The vCenter Server contains multiple denial-of-service vulnerabilities in VAPI (vCenter API)...
CVE-2021-22009 is a high vulnerability (CVSS 7.5) in Vmware Vcenter Server, published September 23, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.40%, the 72nd percentile. No source names a fixed version.
The vCenter Server contains multiple denial-of-service vulnerabilities in VAPI (vCenter API) service. A malicious actor with network access to port 443 on vCenter Server may exploit these issues to create a denial of service condition due to excessive memory consumption by VAPI service.
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
The vCenter Server contains multiple denial-of-service vulnerabilities in VAPI (vCenter API) service. A malicious actor with network access to port 443 on vCenter Server may exploit these issues to create a denial of service condition due to excessive memory consumption by VAPI service.
- Record
CVE-2021-22009- 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 - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-668
- Updated
- 2026-11-02
CVE List No score
The vCenter Server contains multiple denial-of-service vulnerabilities in VAPI (vCenter API) service. A malicious actor with network access to port 443 on vCenter Server may exploit these issues to create a denial of service condition due to excessive memory consumption by VAPI service.
- Record
CVE-2021-22009- Updated
- 2026-11-02
EUVDEUVD-2021-9178 No score
The vCenter Server contains multiple denial-of-service vulnerabilities in VAPI (vCenter API) service. A malicious actor with network access to port 443 on vCenter Server may exploit these issues to create a denial of service condition due to excessive memory consumption by VAPI service.
- Record
EUVD-2021-9178- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-f7qg-95q6-7f8p
The vCenter Server contains multiple denial-of-service vulnerabilities in VAPI (vCenter API)...
The vCenter Server contains multiple denial-of-service vulnerabilities in VAPI (vCenter API) service. A malicious actor with network access to port 443 on vCenter Server may exploit these issues to create a denial of service condition due to excessive memory consumption by VAPI service.
- Record
GHSA-f7qg-95q6-7f8p- 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 - Weakness
- CWE-400
- Updated
- 2026-11-02
Affected products
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD |