# Enterprise Linux for Ibm Z Systems Eus S390x vulnerabilities > Enterprise Linux for Ibm Z Systems Eus S390x is made by Red Hat. We track 7 published vulnerabilities in it, across 4 versions. 2 of them are on the list of flaws known to be exploited, the newest added on 21 November 2023. If you run Enterprise Linux for Ibm Z Systems Eus S390x, check your version against the exploited flaws below and patch those first. Canonical page: https://www.edgeprotect.io/product/redhat/enterprise_linux_for_ibm_z_systems_eus_s390x ## At a glance - **Made by:** [Red Hat](https://www.edgeprotect.io/vendors/redhat) - **Published vulnerabilities:** 7 - **Known to be exploited:** 2 - **Versions tracked:** 4 - **Most recently added to the known-exploited list:** [CVE-2023-4911](https://www.edgeprotect.io/what-is/cve-2023-4911), 21 November 2023. We keep watching the list. ## Which versions of Enterprise Linux for Ibm Z Systems Eus S390x do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. - [CVE-2023-4911](https://www.edgeprotect.io/what-is/cve-2023-4911) (GNU C Library Buffer Overflow Vulnerability): 8.6 - [CVE-2021-40438](https://www.edgeprotect.io/what-is/cve-2021-40438) (Apache HTTP Server-Side Request Forgery (SSRF)): 8.2 ## Which Enterprise Linux for Ibm Z Systems Eus S390x vulnerabilities are being exploited? 2 flaws are on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2023-4911](https://www.edgeprotect.io/what-is/cve-2023-4911): GNU C Library Buffer Overflow Vulnerability. High, CVSS 7.8, chance of use in 30 days 81%, known exploited since 21 November 2023. - [CVE-2021-40438](https://www.edgeprotect.io/what-is/cve-2021-40438): Apache HTTP Server-Side Request Forgery (SSRF). Critical, CVSS 9.0, chance of use in 30 days >99%, known exploited since 1 December 2021. ## Which Enterprise Linux for Ibm Z Systems Eus S390x 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-2021-40438](https://www.edgeprotect.io/what-is/cve-2021-40438): >99%, Critical (CVSS 9.0), known exploited - [CVE-2023-4911](https://www.edgeprotect.io/what-is/cve-2023-4911): 81%, High (CVSS 7.8), known exploited - [CVE-2023-4813](https://www.edgeprotect.io/what-is/cve-2023-4813): 1.7%, Medium (CVSS 5.9) - [CVE-2023-4527](https://www.edgeprotect.io/what-is/cve-2023-4527): 1.5%, Medium (CVSS 6.5) - [CVE-2023-4806](https://www.edgeprotect.io/what-is/cve-2023-4806): 1.4%, Medium (CVSS 5.9) - [CVE-2019-15718](https://www.edgeprotect.io/what-is/cve-2019-15718): 0.5%, Medium (CVSS 4.4) - [CVE-2021-3609](https://www.edgeprotect.io/what-is/cve-2021-3609): 0.4%, High (CVSS 7.0) ## Questions ### How many vulnerabilities does Enterprise Linux for Ibm Z Systems Eus S390x have? We track 7 published vulnerabilities listed under the name Enterprise Linux for Ibm Z Systems Eus S390x, across 4 versions. The most recent Enterprise Linux for Ibm Z Systems Eus S390x flaw added to the known-exploited list is CVE-2023-4911, on 21 November 2023. ### Which Enterprise Linux for Ibm Z Systems Eus S390x 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-2021-40438. ### Which versions of Enterprise Linux for Ibm Z Systems Eus S390x do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2023-4911, affects 8.6. The versions for every exploited flaw are listed on this page. ### How do I get alerts for Enterprise Linux for Ibm Z Systems Eus S390x? Create a EdgeProtect account and track Enterprise Linux for Ibm Z Systems Eus S390x. 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 Enterprise Linux for Ibm Z Systems Eus S390x? EdgeProtect 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.edgeprotect.io/register Book a demo: https://www.edgeprotect.io/contact