# Enterprise Linux for Ibm Z Systems Eus vulnerabilities > Enterprise Linux for Ibm Z Systems Eus is made by Red Hat. We track 83 published vulnerabilities listed under that exact name, across 32 versions. 16 of them are on the list of flaws known to be exploited, the newest added on 2 June 2026. Red Hat lists newer releases under their own names, such as Enterprise Linux for Ibm Z Systems Eus S390x, so check those pages too. Canonical page: https://www.precursorintelligence.com/product/redhat/enterprise_linux_for_ibm_z_systems_eus ## At a glance - **Made by:** [Red Hat](https://www.precursorintelligence.com/vendors/redhat) - **Published vulnerabilities:** 83 - **Known to be exploited:** 16 (listed under the name Enterprise Linux for Ibm Z Systems Eus) - **Versions tracked:** 32 - **Most recently added to the known-exploited list:** [CVE-2022-0492](https://www.precursorintelligence.com/what-is/cve-2022-0492), 2 June 2026. We keep watching the list. ## Is Enterprise Linux for Ibm Z Systems Eus listed under other names? Red Hat also lists Enterprise Linux for Ibm Z Systems Eus under more specific names, such as Enterprise Linux for Ibm Z Systems Eus S390x. Flaws listed only under those names are counted on their own pages, not here. - [Enterprise Linux for Ibm Z Systems Eus S390x](https://www.precursorintelligence.com/product/redhat/enterprise_linux_for_ibm_z_systems_eus_s390x): 7 published vulnerabilities ## Which versions of Enterprise Linux for Ibm Z Systems Eus do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. - [CVE-2022-0492](https://www.precursorintelligence.com/what-is/cve-2022-0492) (Linux Kernel Improper Authentication Vulnerability): 8.0 - [CVE-2023-4911](https://www.precursorintelligence.com/what-is/cve-2023-4911) (GNU C Library Buffer Overflow Vulnerability): 9.2_s390x, 9.4_s390x - [CVE-2021-4034](https://www.precursorintelligence.com/what-is/cve-2021-4034) (Red Hat Polkit Out-of-Bounds Read and Write Vulnerability): 8.2, 8.4 - [CVE-2019-8720](https://www.precursorintelligence.com/what-is/cve-2019-8720) (WebKitGTK Memory Corruption Vulnerability): 8.4, 8.6 - [CVE-2022-0847](https://www.precursorintelligence.com/what-is/cve-2022-0847) (Linux Kernel Privilege Escalation Vulnerability): 8.2, 8.4 - [CVE-2019-11043](https://www.precursorintelligence.com/what-is/cve-2019-11043) (PHP FastCGI Process Manager (FPM) Buffer Overflow Vulnerability): 7.7_s390x, 8.1_s390x, 8.2_s390x, 8.4_s390x, 8.6_s390x, 8.8_s390x - [CVE-2017-12615](https://www.precursorintelligence.com/what-is/cve-2017-12615) (Apache Tomcat on Windows Remote Code Execution Vulnerability): 7.4_s390x, 7.5_s390x, 7.6_s390x, 7.7_s390x - [CVE-2017-12617](https://www.precursorintelligence.com/what-is/cve-2017-12617) (Apache Tomcat Remote Code Execution Vulnerability): 7.4_s390x, 7.5_s390x, 7.6_s390x, 7.7_s390x - [CVE-2013-1675](https://www.precursorintelligence.com/what-is/cve-2013-1675) (Mozilla Firefox Information Disclosure Vulnerability): 5.9_s390x, 6.4_s390x - [CVE-2015-4902](https://www.precursorintelligence.com/what-is/cve-2015-4902) (Oracle Java SE Integrity Check Vulnerability): 6.7_s390x, 7.2_s390x, 7.3_s390x, 7.4_s390x, 7.5_s390x - [CVE-2015-2590](https://www.precursorintelligence.com/what-is/cve-2015-2590) (Oracle Java SE and Java SE Embedded Remote Code Execution Vulnerability): 6.7_s390x, 7.1_s390x, 7.2_s390x, 7.3_s390x, 7.4_s390x, 7.5_s390x - [CVE-2021-40438](https://www.precursorintelligence.com/what-is/cve-2021-40438) (Apache HTTP Server-Side Request Forgery (SSRF)): 8.1, 8.4, 8.8 - [CVE-2016-3718](https://www.precursorintelligence.com/what-is/cve-2016-3718) (ImageMagick Server-Side Request Forgery (SSRF) Vulnerability): 6.7_s390x, 7.2_s390x, 7.3_s390x, 7.4_s390x, 7.5_s390x, 7.6_s390x, 7.7_s390x - [CVE-2016-3715](https://www.precursorintelligence.com/what-is/cve-2016-3715) (ImageMagick Arbitrary File Deletion Vulnerability): 6.7_s390x, 7.2_s390x, 7.3_s390x, 7.4_s390x, 7.5_s390x, 7.6_s390x, 7.7_s390x - [CVE-2019-5544](https://www.precursorintelligence.com/what-is/cve-2019-5544) (VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Vulnerability): 7.7_s390x - [CVE-2019-0211](https://www.precursorintelligence.com/what-is/cve-2019-0211) (Apache HTTP Server Privilege Escalation Vulnerability): 8.1_s390x, 8.2_s390x, 8.4_s390x, 8.6_s390x, 8.8_s390x ## Which Enterprise Linux for Ibm Z Systems Eus vulnerabilities are being exploited? 16 flaws are on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2022-0492](https://www.precursorintelligence.com/what-is/cve-2022-0492): Linux Kernel Improper Authentication Vulnerability. High, CVSS 7.8, chance of use in 30 days 5.5%, known exploited since 2 June 2026. - [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-2021-4034](https://www.precursorintelligence.com/what-is/cve-2021-4034): Red Hat Polkit Out-of-Bounds Read and Write Vulnerability. High, CVSS 7.8, chance of use in 30 days 95%, known exploited since 27 June 2022. - [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. - [CVE-2022-0847](https://www.precursorintelligence.com/what-is/cve-2022-0847): Linux Kernel Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 93%, known exploited since 25 April 2022. - [CVE-2019-11043](https://www.precursorintelligence.com/what-is/cve-2019-11043): PHP FastCGI Process Manager (FPM) Buffer Overflow Vulnerability. High, CVSS 8.7, chance of use in 30 days >99%, known exploited since 25 March 2022. - [CVE-2017-12615](https://www.precursorintelligence.com/what-is/cve-2017-12615): Apache Tomcat on Windows Remote Code Execution Vulnerability. High, CVSS 8.1, chance of use in 30 days >99%, known exploited since 25 March 2022. - [CVE-2017-12617](https://www.precursorintelligence.com/what-is/cve-2017-12617): Apache Tomcat Remote Code Execution Vulnerability. High, CVSS 8.1, chance of use in 30 days >99%, known exploited since 25 March 2022. - [CVE-2013-1675](https://www.precursorintelligence.com/what-is/cve-2013-1675): Mozilla Firefox Information Disclosure Vulnerability. Medium, CVSS 6.5, chance of use in 30 days 6.7%, known exploited since 3 March 2022. - [CVE-2015-4902](https://www.precursorintelligence.com/what-is/cve-2015-4902): Oracle Java SE Integrity Check Vulnerability. Medium, CVSS 5.3, chance of use in 30 days 14%, known exploited since 3 March 2022. - [CVE-2015-2590](https://www.precursorintelligence.com/what-is/cve-2015-2590): Oracle Java SE and Java SE Embedded Remote Code Execution Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 25%, known exploited since 3 March 2022. - [CVE-2021-40438](https://www.precursorintelligence.com/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. - [CVE-2016-3718](https://www.precursorintelligence.com/what-is/cve-2016-3718): ImageMagick Server-Side Request Forgery (SSRF) Vulnerability. Medium, CVSS 5.5, chance of use in 30 days 76%, known exploited since 3 November 2021. - [CVE-2016-3715](https://www.precursorintelligence.com/what-is/cve-2016-3715): ImageMagick Arbitrary File Deletion Vulnerability. Medium, CVSS 5.5, chance of use in 30 days 75%, known exploited since 3 November 2021. - [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. - [CVE-2019-0211](https://www.precursorintelligence.com/what-is/cve-2019-0211): Apache HTTP Server Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 65%, known exploited since 3 November 2021. ## Which Enterprise Linux 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-2021-40438](https://www.precursorintelligence.com/what-is/cve-2021-40438): >99%, Critical (CVSS 9.0), known exploited - [CVE-2017-12617](https://www.precursorintelligence.com/what-is/cve-2017-12617): >99%, High (CVSS 8.1), known exploited - [CVE-2019-11043](https://www.precursorintelligence.com/what-is/cve-2019-11043): >99%, High (CVSS 8.7), known exploited - [CVE-2017-12615](https://www.precursorintelligence.com/what-is/cve-2017-12615): >99%, High (CVSS 8.1), known exploited - [CVE-2024-6387](https://www.precursorintelligence.com/what-is/cve-2024-6387): >99%, High (CVSS 8.1) - [CVE-2019-5544](https://www.precursorintelligence.com/what-is/cve-2019-5544): 97%, Critical (CVSS 9.8), known exploited - [CVE-2021-4034](https://www.precursorintelligence.com/what-is/cve-2021-4034): 95%, High (CVSS 7.8), known exploited - [CVE-2022-0847](https://www.precursorintelligence.com/what-is/cve-2022-0847): 93%, High (CVSS 7.8), known exploited - [CVE-2020-9490](https://www.precursorintelligence.com/what-is/cve-2020-9490): 89%, High (CVSS 7.5) - [CVE-2016-3718](https://www.precursorintelligence.com/what-is/cve-2016-3718): 76%, Medium (CVSS 5.5), known exploited ## Questions ### How many vulnerabilities does Enterprise Linux for Ibm Z Systems Eus have? We track 83 published vulnerabilities listed under the name Enterprise Linux for Ibm Z Systems Eus, across 32 versions. The most recent Enterprise Linux for Ibm Z Systems Eus flaw added to the known-exploited list is CVE-2022-0492, on 2 June 2026. ### Which Enterprise Linux for Ibm Z Systems Eus vulnerabilities are being exploited? 16 are on the list of flaws known to be exploited. The most recently added are CVE-2022-0492, CVE-2023-4911 and CVE-2021-4034. ### Why are newer Enterprise Linux for Ibm Z Systems Eus flaws missing from this page? Red Hat also lists Enterprise Linux for Ibm Z Systems Eus under more specific names, such as Enterprise Linux for Ibm Z Systems Eus S390x. 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 Enterprise Linux for Ibm Z Systems Eus do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2022-0492, affects 8.0. The versions for every exploited flaw are listed on this page. ### How do I get alerts for Enterprise Linux for Ibm Z Systems Eus? Create a Precursor Intelligence account and track Enterprise Linux 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 Enterprise Linux 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. 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