# Horizon Daas vulnerabilities > Horizon Daas is made by VMware. We track 4 published vulnerabilities in it, across 4 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 3 November 2021. If you run Horizon Daas, check your version against the exploited flaws below and patch those first. Canonical page: https://www.precursorintelligence.com/product/vmware/horizon_daas ## At a glance - **Made by:** [VMware](https://www.precursorintelligence.com/vendors/vmware) - **Published vulnerabilities:** 4 - **Known to be exploited:** 1 - **Versions tracked:** 4 - **Most recently added to the known-exploited list:** [CVE-2019-5544](https://www.precursorintelligence.com/what-is/cve-2019-5544), 3 November 2021. We keep watching the list. ## Which versions of Horizon Daas do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. "8.0.0 to before 9.0.0.0" means from 8.0.0 up to, but not including, 9.0.0.0. - [CVE-2019-5544](https://www.precursorintelligence.com/what-is/cve-2019-5544) (VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Vulnerability): 8.0.0 to before 9.0.0.0 ## Which Horizon Daas vulnerabilities are being exploited? 1 flaw is on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2019-5544](https://www.precursorintelligence.com/what-is/cve-2019-5544): VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 97%, known exploited since 3 November 2021. ## Which Horizon Daas flaws are most likely to be used? Ranked by the latest exploit-likelihood forecast (the chance each flaw is used in an attack in the next 30 days): - [CVE-2019-5544](https://www.precursorintelligence.com/what-is/cve-2019-5544): 97%, Critical (CVSS 9.8), known exploited - [CVE-2018-6960](https://www.precursorintelligence.com/what-is/cve-2018-6960): 2.5%, High (CVSS 8.8) - [CVE-2017-4897](https://www.precursorintelligence.com/what-is/cve-2017-4897): 1.1%, Medium (CVSS 5.5) - [CVE-2020-3977](https://www.precursorintelligence.com/what-is/cve-2020-3977): 1.0%, Medium (CVSS 6.5) ## Questions ### How many vulnerabilities does Horizon Daas have? We track 4 published vulnerabilities listed under the name Horizon Daas, across 4 versions. The most recent Horizon Daas flaw added to the known-exploited list is CVE-2019-5544, on 3 November 2021. ### Which Horizon Daas vulnerabilities are being exploited? 1 is on the list of flaws known to be exploited. The most recently added is CVE-2019-5544. ### Which versions of Horizon Daas do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2019-5544, affects 8.0.0 to before 9.0.0.0. The versions for every exploited flaw are listed on this page. ### How do I get alerts for Horizon Daas? Create a Precursor Intelligence account and track Horizon Daas. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook. ## Running Horizon Daas? Precursor Intelligence keeps checking for you: - **Tell us what you run.** Pick your software from a list, or let us work it out from your website. - **We match it to every flaw.** Over 400,000 published flaws, checked against your list. - **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it. - **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools. Start free (no card, nothing to install): https://www.precursorintelligence.com/register Book a demo: https://www.precursorintelligence.com/contact