{"cve":"CVE-2019-5544","nvd":{"published":"2019-12-06T16:15:11.467","modified":"2026-06-17T02:37:52.780","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-787"],"references":["http://www.openwall.com/lists/oss-security/2019/12/10/2","http://www.openwall.com/lists/oss-security/2019/12/11/2","http://www.vmware.com/security/advisories/VMSA-2019-0022.html","https://access.redhat.com/errata/RHSA-2019:4240","https://access.redhat.com/errata/RHSA-2020:0199"],"products":["fedoraproject:fedora","openslp:openslp","redhat:enterprise_linux_desktop","redhat:enterprise_linux_for_ibm_z_systems","redhat:enterprise_linux_for_ibm_z_systems_eus","redhat:enterprise_linux_for_power_big_endian","redhat:enterprise_linux_for_power_big_endian_eus","redhat:enterprise_linux_for_power_little_endian","redhat:enterprise_linux_for_power_little_endian_eus","redhat:enterprise_linux_server","redhat:enterprise_linux_server_aus","redhat:enterprise_linux_server_eus","redhat:enterprise_linux_server_tus","redhat:enterprise_linux_workstation","vmware:esxi","vmware:horizon_daas"],"source":"nvd","synced_at":"2026-10-19T20:59:27.069234358+00:00"},"epss":{"cve":"CVE-2019-5544","score":0.98129,"percentile":0.99913,"date":"2026-10-31"},"kev":{"cve":"CVE-2019-5544","date_added":"2021-11-03","due_date":"2022-05-03","vendor":"VMware","product":"VMware ESXi and Horizon DaaS","known_ransomware":true},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}