CRITICALCVSS v3.1 9.8Actively exploited · CISA KEV since 2021-11-03Vulnerability

CVE-2019-5544

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.

Properties

Euvd product
ESXi and Horizon DaaS
Vulnerability name
VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Vulnerability
First seen
2025-10-21T23:35:56+00:00
Cvss score
9.8
Epss score
0.98129
Last seen
2026-10-19T12:00:27+00:00
Due date
2022-05-03
Euvd assigner
vmware
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2021-11-03T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2021-11-03
Score
9.8
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
9.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Related Entities (263 · showing 23)

HAS_WEAKNESS (1)

→[Weakness]Out-of-bounds Write

INVOLVES (1)

Explore deeper with Ninja Signal's threat intelligence graph

CVE-2019-5544 (CVSS v3.1 9.8) — Ninja Signal Threat Intelligence | Ninja Signal