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CVE-2019-5544: VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Vulnerability
VMware VMware ESXi and Horizon DaaS · in CISA KEV since 2021-11-03
2021-11-03added to KEV
2022-05-03federal remediation due date
97.26%EPSS exploit probability (30 days) 99.9th percentile
9.8 CRITICALCVSS 3.1
Knownknown ransomware use
698days from NVD publication to KEV
What it is
VMware ESXi and Horizon Desktop as a Service (DaaS) OpenSLP contains a heap-based buffer overflow vulnerability that allows an attacker with network access to port 427 to overwrite the heap of the OpenSLP service to perform remote code execution.
Required action (CISA)
Apply updates per vendor instructions.
| CWE | CWE-787 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD published | 2019-12-06 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2019-5544.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.