Description
OpenSLP as used in ESXi (7.0 before ESXi70U1c-17325551, 6.7 before ESXi670-202102401-SG, 6.5 before ESXi650-202102101-SG) has a heap-overflow vulnerability. A malicious actor residing within the same network segment as ESXi who has access to port 427 may be able to trigger the heap-overflow issue in OpenSLP service resulting in remote code execution.
Published: 2021-02-24
Score: 8.8 High
EPSS: 45.1% Moderate
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 03 Jun 2026 02:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Subscriptions

Vmware Cloud Foundation Esxi
cve-icon MITRE

Status: PUBLISHED

Assigner: vmware

Published:

Updated: 2026-06-02T20:00:52.080Z

Reserved: 2021-01-04T00:00:00.000Z

Link: CVE-2021-21974

cve-icon Vulnrichment

Updated: 2024-08-03T18:30:23.578Z

cve-icon NVD

Status : Modified

Published: 2021-02-24T17:15:16.017

Modified: 2026-06-17T03:36:29.087

Link: CVE-2021-21974

cve-icon Redhat

Severity : Important

Publid Date: 2021-02-24T00:00:00Z

Links: CVE-2021-21974 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses