# Codeready Linux Builder for Ibm Z Systems vulnerabilities > Codeready Linux Builder for Ibm Z Systems is made by Red Hat. We track 11 published vulnerabilities listed under that exact name, across 4 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 21 November 2023. Red Hat lists newer releases under their own names, such as Codeready Linux Builder for Ibm Z Systems Eus, so check those pages too. Canonical page: https://www.precursorintelligence.com/product/redhat/codeready_linux_builder_for_ibm_z_systems ## At a glance - **Made by:** [Red Hat](https://www.precursorintelligence.com/vendors/redhat) - **Published vulnerabilities:** 11 - **Known to be exploited:** 1 (listed under the name Codeready Linux Builder for Ibm Z Systems) - **Versions tracked:** 4 - **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. ## Is Codeready Linux Builder for Ibm Z Systems listed under other names? Red Hat also lists Codeready Linux Builder for Ibm Z Systems under more specific names, such as Codeready Linux Builder for Ibm Z Systems Eus. Flaws listed only under those names are counted on their own pages, not here. - [Codeready Linux Builder for Ibm Z Systems Eus](https://www.precursorintelligence.com/product/redhat/codeready_linux_builder_for_ibm_z_systems_eus): 13 published vulnerabilities ## Which versions of Codeready Linux Builder for Ibm Z Systems 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): 9.0_s390x ## Which Codeready Linux Builder for Ibm Z Systems vulnerabilities are being exploited? 1 flaw is 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. ## Which Codeready Linux Builder for Ibm Z Systems 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-2021-3737](https://www.precursorintelligence.com/what-is/cve-2021-3737): 13%, High (CVSS 7.5) - [CVE-2021-3733](https://www.precursorintelligence.com/what-is/cve-2021-3733): 4.8%, Medium (CVSS 6.5) - [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-2020-27842](https://www.precursorintelligence.com/what-is/cve-2020-27842): 1.5%, Medium (CVSS 5.5) - [CVE-2021-3930](https://www.precursorintelligence.com/what-is/cve-2021-3930): 0.3%, Medium (CVSS 6.5) - [CVE-2023-4042](https://www.precursorintelligence.com/what-is/cve-2023-4042): 0.3%, Medium (CVSS 5.5) - [CVE-2024-1488](https://www.precursorintelligence.com/what-is/cve-2024-1488): 0.3%, High (CVSS 8.0) - [CVE-2023-5633](https://www.precursorintelligence.com/what-is/cve-2023-5633): 0.3%, High (CVSS 7.8) ## Questions ### How many vulnerabilities does Codeready Linux Builder for Ibm Z Systems have? We track 11 published vulnerabilities listed under the name Codeready Linux Builder for Ibm Z Systems, across 4 versions. The most recent Codeready Linux Builder for Ibm Z Systems flaw added to the known-exploited list is CVE-2023-4911, on 21 November 2023. ### Which Codeready Linux Builder for Ibm Z Systems vulnerabilities are being exploited? 1 is on the list of flaws known to be exploited. The most recently added is CVE-2023-4911. ### Why are newer Codeready Linux Builder for Ibm Z Systems flaws missing from this page? Red Hat also lists Codeready Linux Builder for Ibm Z Systems under more specific names, such as Codeready Linux Builder for Ibm Z Systems Eus. Flaws listed only under those names are counted on their own pages, not here. Open the release you run to see its own list. ### Which versions of Codeready Linux Builder for Ibm Z Systems do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2023-4911, affects 9.0_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? Create a Precursor Intelligence account and track Codeready Linux Builder for Ibm Z Systems. 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? 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. 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