# Codeready Linux Builder for Ibm Z Systems Eus vulnerabilities > Codeready Linux Builder for Ibm Z Systems Eus is made by Red Hat. We track 13 published vulnerabilities in it, across 6 versions. 2 of them are on the list of flaws known to be exploited, the newest added on 21 November 2023. If you run Codeready Linux Builder for Ibm Z Systems Eus, check your version against the exploited flaws below and patch those first. Canonical page: https://www.precursorintelligence.com/product/redhat/codeready_linux_builder_for_ibm_z_systems_eus ## At a glance - **Made by:** [Red Hat](https://www.precursorintelligence.com/vendors/redhat) - **Published vulnerabilities:** 13 - **Known to be exploited:** 2 - **Versions tracked:** 6 - **Most recently added to the known-exploited list:** [CVE-2023-4911](https://www.precursorintelligence.com/what-is/cve-2023-4911), 21 November 2023. We keep watching the list. ## Which versions of Codeready Linux Builder for Ibm Z Systems Eus do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. - [CVE-2023-4911](https://www.precursorintelligence.com/what-is/cve-2023-4911) (GNU C Library Buffer Overflow Vulnerability): 8.6, 9.2_s390x, 9.4_s390x - [CVE-2019-8720](https://www.precursorintelligence.com/what-is/cve-2019-8720) (WebKitGTK Memory Corruption Vulnerability): 8.0, 8.4, 8.6 ## Which Codeready Linux Builder for Ibm Z Systems Eus vulnerabilities are being exploited? 2 flaws are on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2023-4911](https://www.precursorintelligence.com/what-is/cve-2023-4911): GNU C Library Buffer Overflow Vulnerability. High, CVSS 7.8, chance of use in 30 days 64%, known exploited since 21 November 2023. - [CVE-2019-8720](https://www.precursorintelligence.com/what-is/cve-2019-8720): WebKitGTK Memory Corruption Vulnerability. High, CVSS 8.8, chance of use in 30 days 1.6%, known exploited since 23 May 2022. ## Which Codeready Linux Builder for Ibm Z Systems Eus 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-2023-4911](https://www.precursorintelligence.com/what-is/cve-2023-4911): 64%, High (CVSS 7.8), known exploited - [CVE-2023-5869](https://www.precursorintelligence.com/what-is/cve-2023-5869): 4.3%, High (CVSS 8.8) - [CVE-2023-5868](https://www.precursorintelligence.com/what-is/cve-2023-5868): 2.8%, Medium (CVSS 4.3) - [CVE-2023-5870](https://www.precursorintelligence.com/what-is/cve-2023-5870): 2.6%, Low (CVSS 2.2) - [CVE-2023-4527](https://www.precursorintelligence.com/what-is/cve-2023-4527): 1.7%, Medium (CVSS 6.5) - [CVE-2023-4806](https://www.precursorintelligence.com/what-is/cve-2023-4806): 1.6%, Medium (CVSS 5.9) - [CVE-2019-8720](https://www.precursorintelligence.com/what-is/cve-2019-8720): 1.6%, High (CVSS 8.8), known exploited - [CVE-2023-6535](https://www.precursorintelligence.com/what-is/cve-2023-6535): 1.5%, Medium (CVSS 6.5) - [CVE-2023-6536](https://www.precursorintelligence.com/what-is/cve-2023-6536): 1.5%, Medium (CVSS 6.5) - [CVE-2023-6356](https://www.precursorintelligence.com/what-is/cve-2023-6356): 1.5%, Medium (CVSS 6.5) ## Questions ### How many vulnerabilities does Codeready Linux Builder for Ibm Z Systems Eus have? We track 13 published vulnerabilities listed under the name Codeready Linux Builder for Ibm Z Systems Eus, across 6 versions. The most recent Codeready Linux Builder for Ibm Z Systems Eus flaw added to the known-exploited list is CVE-2023-4911, on 21 November 2023. ### Which Codeready Linux Builder for Ibm Z Systems Eus vulnerabilities are being exploited? 2 are on the list of flaws known to be exploited. The most recently added are CVE-2023-4911 and CVE-2019-8720. ### Which versions of Codeready Linux Builder for Ibm Z Systems Eus do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2023-4911, affects 8.6, 9.2_s390x, 9.4_s390x. The versions for every exploited flaw are listed on this page. ### How do I get alerts for Codeready Linux Builder for Ibm Z Systems Eus? Create a Precursor Intelligence account and track Codeready Linux Builder for Ibm Z Systems Eus. 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 Codeready Linux Builder for Ibm Z Systems Eus? 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