CVE-2019-5544

9.8 CRITICAL CISA KEV - Actively Exploited

Published: December 06, 2019 Modified: October 30, 2025

Description

OpenSLP as used in ESXi and the Horizon DaaS appliances has a heap overwrite issue. VMware has evaluated the severity of this issue to be in the Critical severity range with a maximum CVSSv3 base score of 9.8.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://www.openwall.com/lists/oss-security/2019/12/10/2

Source: security@vmware.com

Mailing List Third Party Advisory

http://www.openwall.com/lists/oss-security/2019/12/11/2

Source: security@vmware.com

Mailing List Third Party Advisory

http://www.vmware.com/security/advisories/VMSA-2019-0022.html

Source: security@vmware.com

Patch Vendor Advisory

https://access.redhat.com/errata/RHSA-2019:4240

Source: security@vmware.com

Third Party Advisory

https://access.redhat.com/errata/RHSA-2020:0199

Source: security@vmware.com

Third Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DA3LYAJ2NRKMOZLZOQNDJ5TNQRFMWGHF/

Source: security@vmware.com

Release Notes

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZPXXJZLPLAQULBCJVI5NNWZ3PGWXGXWG/

Source: security@vmware.com

Release Notes

https://security.gentoo.org/glsa/202005-12

Source: security@vmware.com

Third Party Advisory

http://www.openwall.com/lists/oss-security/2019/12/10/2