CVE-2021-21995
Published Jul 13, 2021
CVSS 3.1 · 7.5 High
EPSS < 1%
KEV · Not listed
Description
OpenSLP as used in ESXi has a denial-of-service vulnerability due a heap out-of-bounds read issue. A malicious actor with network access to port 427 on ESXi may be able to trigger a heap out-of-bounds read in OpenSLP service resulting in a denial-of-service condition.
Affected Products
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CVE record
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NVD configurations
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Red Hat packages
No data
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OpenCVE enrichment
No data
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | VMware ESXi and VMware Cloud Foundation | affected |
|
Configuration 1 [-]
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Configuration 2 [-]
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No data.
No data available yet.
Remediation
Tracking
Advisories
| Source | ID | Title |
|---|---|---|
 EUVD |
EUVD-2021-9166 | OpenSLP as used in ESXi has a denial-of-service vulnerability due a heap out-of-bounds read issue. A malicious actor with network access to port 427 on ESXi may be able to trigger a heap out-of-bounds read in OpenSLP service resulting in a denial-of-service condition. |
Metrics
No CVSS v4.0
Attack Vector Network
Attack Complexity Low
Privileges Required None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
User Interaction None
No CVSS v3.0
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.961% probability within 30 days)
Key SSVC decision points have not yet been added.
References
History
Oct 31, 2025 11:45 AM
Affected versions updated
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:* |
Weaknesses
