All vulnerabilities
CVE-2019-5544

VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Vulnerability

VMware VMware ESXi and Horizon DaaSContainers & cloud
Open in ThreatlineRecord JSON
CVSS
9.8Critical
ExploitationExploited in the wildAdded to KEV 3 Nov 2021. Known ransomware useCISA KEV
Exploit odds (EPSS)98.1%Chance of exploitation activity in the next 30 days, higher than 99.9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline3 May 2022Remediation due date for US federal agenciesCISA KEV
CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 6 Dec 2019, 15:54 UTCPublishedCVE List
  2. 3 Nov 2021Added to CISA KEVCISA KEV

Public exploit code and templates 1

  • Scanner templateVMware ESXi SLP - Heap Overflow DoSNuclei

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

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.

Text from CVE List

Affected versions 1

  • ESXi and Horizon DaaSaffected: ESXi 6.7 prior to patch release ESXi670-201912001, ESXi 6.5 prior to patch release ESXi650-201912001, ESXi 6.0 prior to patch release ESXi600-201912001 and Horizon DaaS 8.x prior to BZ-2467224-Disable_SLPD_service_permanently_801_Hotfix.CVE List

References 7