CVE-2021-22019
The vCenter Server contains a denial-of-service vulnerability in VAPI (vCenter API) service. A...
CVE-2021-22019 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 1.62%, the 76th percentile. No source names a fixed version.
The vCenter Server contains a denial-of-service vulnerability in VAPI (vCenter API) service. A malicious actor with network access to port 5480 on vCenter Server may exploit this issue by sending a specially crafted jsonrpc message to create a denial of service condition.
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 a denial-of-service vulnerability in VAPI (vCenter API) service. A malicious actor with network access to port 5480 on vCenter Server may exploit this issue by sending a specially crafted jsonrpc message to create a denial of service condition.
- Record
CVE-2021-22019- 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 - Updated
- 2026-11-02
CVE List No score
The vCenter Server contains a denial-of-service vulnerability in VAPI (vCenter API) service. A malicious actor with network access to port 5480 on vCenter Server may exploit this issue by sending a specially crafted jsonrpc message to create a denial of service condition.
- Record
CVE-2021-22019- Updated
- 2026-11-02
EUVDEUVD-2021-9188 No score
The vCenter Server contains a denial-of-service vulnerability in VAPI (vCenter API) service. A malicious actor with network access to port 5480 on vCenter Server may exploit this issue by sending a specially crafted jsonrpc message to create a denial of service condition.
- Record
EUVD-2021-9188- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jqp4-j8cc-wx66 No score
The vCenter Server contains a denial-of-service vulnerability in VAPI (vCenter API) service. A...
The vCenter Server contains a denial-of-service vulnerability in VAPI (vCenter API) service. A malicious actor with network access to port 5480 on vCenter Server may exploit this issue by sending a specially crafted jsonrpc message to create a denial of service condition.
- Record
GHSA-jqp4-j8cc-wx66- Updated
- 2026-11-02
Affected products
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD |