# Ubuntu Linux vulnerabilities > Ubuntu Linux is made by Canonical. We track 4,170 published vulnerabilities in it, across 76 versions. 46 of them are on the list of flaws known to be exploited, the newest added on 2 June 2026. If you run Ubuntu Linux, check your version against the exploited flaws below and patch those first. Canonical page: https://www.precursorintelligence.com/product/canonical/ubuntu_linux ## At a glance - **Made by:** [Canonical](https://www.precursorintelligence.com/vendors/canonical) - **Published vulnerabilities:** 4,170 - **Known to be exploited:** 46 - **Versions tracked:** 76 - **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. ## Which versions of Ubuntu Linux do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. "before 18.04" means every version up to, but not including, 18.04. - [CVE-2022-0492](https://www.precursorintelligence.com/what-is/cve-2022-0492) (Linux Kernel Improper Authentication Vulnerability): 14.04, 16.04, 18.04, 20.04, 22.04 - [CVE-2026-31431](https://www.precursorintelligence.com/what-is/cve-2026-31431) (Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability): 14.04, 16.04, 18.04, 20.04, 22.04, 24.04, 25.10 - [CVE-2018-14634](https://www.precursorintelligence.com/what-is/cve-2018-14634) (Linux Kernel Integer Overflow Vulnerability): 12.04, 14.04 - [CVE-2025-32463](https://www.precursorintelligence.com/what-is/cve-2025-32463) (Sudo Inclusion of Functionality from Untrusted Control Sphere Vulnerability): 22.04, 24.04, 24.10, 25.04 - [CVE-2016-3714](https://www.precursorintelligence.com/what-is/cve-2016-3714) (ImageMagick Improper Input Validation Vulnerability): 12.04, 14.04, 15.10, 16.04 - [CVE-2022-2586](https://www.precursorintelligence.com/what-is/cve-2022-2586) (Linux Kernel Use-After-Free Vulnerability): 14.04, 16.04, 18.04, 20.04, 22.04 - [CVE-2023-4911](https://www.precursorintelligence.com/what-is/cve-2023-4911) (GNU C Library Buffer Overflow Vulnerability): 22.04, 23.04 - [CVE-2016-8735](https://www.precursorintelligence.com/what-is/cve-2016-8735) (Apache Tomcat Remote Code Execution Vulnerability): 16.04 - [CVE-2010-3904](https://www.precursorintelligence.com/what-is/cve-2010-3904) (Linux Kernel Improper Input Validation Vulnerability): 6.06, 8.04, 9.04, 9.10, 10.04, 10.10 - [CVE-2021-3560](https://www.precursorintelligence.com/what-is/cve-2021-3560) (Red Hat Polkit Incorrect Authorization Vulnerability): 20.04 - [CVE-2016-3427](https://www.precursorintelligence.com/what-is/cve-2016-3427) (Oracle Java SE and JRockit Unspecified Vulnerability): 12.04, 14.04, 15.10, 16.04 - [CVE-2014-0196](https://www.precursorintelligence.com/what-is/cve-2014-0196) (Linux Kernel Race Condition Vulnerability): 10.04, 12.04, 12.10, 13.10, 14.04 - [CVE-2021-3493](https://www.precursorintelligence.com/what-is/cve-2021-3493) (Linux Kernel Privilege Escalation Vulnerability): before 18.04, before 20.10, 18.04.1 to before 20.04 - [CVE-2021-4034](https://www.precursorintelligence.com/what-is/cve-2021-4034) (Red Hat Polkit Out-of-Bounds Read and Write Vulnerability): 14.04, 16.04, 18.04, 20.04, 21.10 - [CVE-2016-1646](https://www.precursorintelligence.com/what-is/cve-2016-1646) (Google Chromium V8 Out-of-Bounds Read Vulnerability): 14.04, 15.10, 16.04 - [CVE-2013-0422](https://www.precursorintelligence.com/what-is/cve-2013-0422) (Oracle JRE Remote Code Execution Vulnerability): 12.10 - [CVE-2010-0840](https://www.precursorintelligence.com/what-is/cve-2010-0840) (Oracle JRE Unspecified Vulnerability): 8.04, 8.10, 9.04, 9.10 - [CVE-2013-2423](https://www.precursorintelligence.com/what-is/cve-2013-2423) (Oracle JRE Unspecified Vulnerability): 12.10 - [CVE-2014-3153](https://www.precursorintelligence.com/what-is/cve-2014-3153) (Linux Kernel Privilege Escalation Vulnerability): 12.04, 14.04 - [CVE-2015-4495](https://www.precursorintelligence.com/what-is/cve-2015-4495) (Mozilla Firefox Security Feature Bypass Vulnerability): 12.04, 14.04, 15.04 - [CVE-2014-0160](https://www.precursorintelligence.com/what-is/cve-2014-0160) (OpenSSL Information Disclosure Vulnerability): 12.04, 12.10, 13.10 - [CVE-2013-1690](https://www.precursorintelligence.com/what-is/cve-2013-1690) (Mozilla Firefox and Thunderbird Denial-of-Service Vulnerability): 12.04, 12.10, 13.04 - [CVE-2020-7247](https://www.precursorintelligence.com/what-is/cve-2020-7247) (OpenSMTPD Remote Code Execution Vulnerability): 18.04, 19.10 - [CVE-2010-4345](https://www.precursorintelligence.com/what-is/cve-2010-4345) (Exim Privilege Escalation Vulnerability): 6.06, 8.04, 9.10, 10.04, 10.10 - [CVE-2010-4344](https://www.precursorintelligence.com/what-is/cve-2010-4344) (Exim Heap-Based Buffer Overflow Vulnerability): 6.06, 8.04, 9.10 - [CVE-2017-12617](https://www.precursorintelligence.com/what-is/cve-2017-12617) (Apache Tomcat Remote Code Execution Vulnerability): 12.04, 16.04, 17.10, 18.04 - [CVE-2019-11043](https://www.precursorintelligence.com/what-is/cve-2019-11043) (PHP FastCGI Process Manager (FPM) Buffer Overflow Vulnerability): 12.04, 14.04, 16.04, 18.04, 19.04, 19.10 - [CVE-2011-3544](https://www.precursorintelligence.com/what-is/cve-2011-3544) (Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution Vulnerability): 10.04, 10.10, 11.04, 11.10 - [CVE-2013-1675](https://www.precursorintelligence.com/what-is/cve-2013-1675) (Mozilla Firefox Information Disclosure Vulnerability): 12.04, 12.10, 13.04 1 more exploited flaw names Ubuntu Linux without a version of its own (for example as the system other affected software runs on). They are in the list below. Checked: the 30 most recently added of 46 exploited flaws. ## Which Ubuntu Linux vulnerabilities are being exploited? 46 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-2026-31431](https://www.precursorintelligence.com/what-is/cve-2026-31431): Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability. High, CVSS 7.8, chance of use in 30 days 3.4%, known exploited since 1 May 2026. - [CVE-2018-14634](https://www.precursorintelligence.com/what-is/cve-2018-14634): Linux Kernel Integer Overflow Vulnerability. High, CVSS 7.8, chance of use in 30 days 15%, known exploited since 26 January 2026. - [CVE-2025-32463](https://www.precursorintelligence.com/what-is/cve-2025-32463): Sudo Inclusion of Functionality from Untrusted Control Sphere Vulnerability. Critical, CVSS 9.3, chance of use in 30 days 55%, known exploited since 29 September 2025. - [CVE-2016-3714](https://www.precursorintelligence.com/what-is/cve-2016-3714): ImageMagick Improper Input Validation Vulnerability. High, CVSS 8.4, chance of use in 30 days 97%, known exploited since 9 September 2024. - [CVE-2022-2586](https://www.precursorintelligence.com/what-is/cve-2022-2586): Linux Kernel Use-After-Free Vulnerability. Medium, CVSS 5.3, chance of use in 30 days 10%, known exploited since 26 June 2024. - [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-2016-8735](https://www.precursorintelligence.com/what-is/cve-2016-8735): Apache Tomcat Remote Code Execution Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 90%, known exploited since 12 May 2023. - [CVE-2010-3904](https://www.precursorintelligence.com/what-is/cve-2010-3904): Linux Kernel Improper Input Validation Vulnerability. High, CVSS 7.8, chance of use in 30 days 16%, known exploited since 12 May 2023. - [CVE-2021-3560](https://www.precursorintelligence.com/what-is/cve-2021-3560): Red Hat Polkit Incorrect Authorization Vulnerability. High, CVSS 7.8, chance of use in 30 days 24%, known exploited since 12 May 2023. - [CVE-2016-3427](https://www.precursorintelligence.com/what-is/cve-2016-3427): Oracle Java SE and JRockit Unspecified Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 92%, known exploited since 12 May 2023. - [CVE-2014-0196](https://www.precursorintelligence.com/what-is/cve-2014-0196): Linux Kernel Race Condition Vulnerability. Medium, CVSS 5.5, chance of use in 30 days 22%, known exploited since 12 May 2023. - [CVE-2021-3493](https://www.precursorintelligence.com/what-is/cve-2021-3493): Linux Kernel Privilege Escalation Vulnerability. High, CVSS 8.8, chance of use in 30 days 49%, known exploited since 20 October 2022. - [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-2016-1646](https://www.precursorintelligence.com/what-is/cve-2016-1646): Google Chromium V8 Out-of-Bounds Read Vulnerability. High, CVSS 8.8, chance of use in 30 days 48%, known exploited since 8 June 2022. - [CVE-2013-0422](https://www.precursorintelligence.com/what-is/cve-2013-0422): Oracle JRE Remote Code Execution Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 97%, known exploited since 25 May 2022. - [CVE-2010-0840](https://www.precursorintelligence.com/what-is/cve-2010-0840): Oracle JRE Unspecified Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 96%, known exploited since 25 May 2022. - [CVE-2013-2423](https://www.precursorintelligence.com/what-is/cve-2013-2423): Oracle JRE Unspecified Vulnerability. Low, CVSS 3.7, chance of use in 30 days 85%, known exploited since 25 May 2022. - [CVE-2014-3153](https://www.precursorintelligence.com/what-is/cve-2014-3153): Linux Kernel Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 37%, known exploited since 25 May 2022. - [CVE-2015-4495](https://www.precursorintelligence.com/what-is/cve-2015-4495): Mozilla Firefox Security Feature Bypass Vulnerability. High, CVSS 8.8, chance of use in 30 days 69%, known exploited since 25 May 2022. - [CVE-2014-0160](https://www.precursorintelligence.com/what-is/cve-2014-0160): OpenSSL Information Disclosure Vulnerability. High, CVSS 7.5, chance of use in 30 days >99%, known exploited since 4 May 2022. - [CVE-2013-1690](https://www.precursorintelligence.com/what-is/cve-2013-1690): Mozilla Firefox and Thunderbird Denial-of-Service Vulnerability. High, CVSS 8.8, chance of use in 30 days 69%, known exploited since 28 March 2022. - [CVE-2022-0543](https://www.precursorintelligence.com/what-is/cve-2022-0543): Debian-specific Redis Server Lua Sandbox Escape Vulnerability. Critical, CVSS 10.0, chance of use in 30 days >99%, known exploited since 28 March 2022. - [CVE-2020-7247](https://www.precursorintelligence.com/what-is/cve-2020-7247): OpenSMTPD Remote Code Execution Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 99%, known exploited since 25 March 2022. - [CVE-2010-4345](https://www.precursorintelligence.com/what-is/cve-2010-4345): Exim Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 18%, known exploited since 25 March 2022. - [CVE-2010-4344](https://www.precursorintelligence.com/what-is/cve-2010-4344): Exim Heap-Based Buffer Overflow Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 72%, 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-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-2011-3544](https://www.precursorintelligence.com/what-is/cve-2011-3544): Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 97%, known exploited since 3 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-2019-16928](https://www.precursorintelligence.com/what-is/cve-2019-16928): Exim Out-of-bounds Write Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 42%, 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-2016-5195](https://www.precursorintelligence.com/what-is/cve-2016-5195): Linux Kernel Race Condition Vulnerability. High, CVSS 7.0, chance of use in 30 days 84%, known exploited since 3 March 2022. - [CVE-2014-7169](https://www.precursorintelligence.com/what-is/cve-2014-7169): GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Vulnerability. Critical, CVSS 9.8, chance of use in 30 days >99%, known exploited since 28 January 2022. - [CVE-2014-6271](https://www.precursorintelligence.com/what-is/cve-2014-6271): GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Vulnerability. Critical, CVSS 9.8, chance of use in 30 days >99%, known exploited since 28 January 2022. - [CVE-2019-10149](https://www.precursorintelligence.com/what-is/cve-2019-10149): Exim Mail Transfer Agent (MTA) Improper Input Validation. Critical, CVSS 9.8, chance of use in 30 days >99%, known exploited since 10 January 2022. - [CVE-2019-13272](https://www.precursorintelligence.com/what-is/cve-2019-13272): Linux Kernel Improper Privilege Management Vulnerability. High, CVSS 7.8, chance of use in 30 days 52%, known exploited since 10 December 2021. - [CVE-2020-11651](https://www.precursorintelligence.com/what-is/cve-2020-11651): SaltStack Salt Authentication Bypass Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 97%, 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-2018-6789](https://www.precursorintelligence.com/what-is/cve-2018-6789): Exim Buffer Overflow Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 82%, 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. - [CVE-2019-17026](https://www.precursorintelligence.com/what-is/cve-2019-17026): Mozilla Firefox And Thunderbird Type Confusion Vulnerability. High, CVSS 8.8, chance of use in 30 days 46%, known exploited since 3 November 2021. - [CVE-2019-2215](https://www.precursorintelligence.com/what-is/cve-2019-2215): Android Kernel Use-After-Free Vulnerability. High, CVSS 7.8, chance of use in 30 days 72%, known exploited since 3 November 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-2020-11652](https://www.precursorintelligence.com/what-is/cve-2020-11652): SaltStack Salt Path Traversal Vulnerability. Medium, CVSS 6.5, chance of use in 30 days 86%, known exploited since 3 November 2021. - [CVE-2020-1472](https://www.precursorintelligence.com/what-is/cve-2020-1472): Microsoft Netlogon Privilege Escalation Vulnerability. Medium, CVSS 5.5, chance of use in 30 days >99%, known exploited since 3 November 2021. ## Which Ubuntu Linux 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-2014-0160](https://www.precursorintelligence.com/what-is/cve-2014-0160): >99%, High (CVSS 7.5), known exploited - [CVE-2014-6271](https://www.precursorintelligence.com/what-is/cve-2014-6271): >99%, Critical (CVSS 9.8), known exploited - [CVE-2014-7169](https://www.precursorintelligence.com/what-is/cve-2014-7169): >99%, Critical (CVSS 9.8), known exploited - [CVE-2011-3192](https://www.precursorintelligence.com/what-is/cve-2011-3192): 99%, High (CVSS 7.8) - [CVE-2013-0422](https://www.precursorintelligence.com/what-is/cve-2013-0422): 97%, Critical (CVSS 9.8), known exploited - [CVE-2011-3544](https://www.precursorintelligence.com/what-is/cve-2011-3544): 97%, Critical (CVSS 9.8), known exploited - [CVE-2006-3747](https://www.precursorintelligence.com/what-is/cve-2006-3747): 97%, High (CVSS 7.6) - [CVE-2010-0840](https://www.precursorintelligence.com/what-is/cve-2010-0840): 96%, Critical (CVSS 9.8), known exploited - [CVE-2006-3918](https://www.precursorintelligence.com/what-is/cve-2006-3918): 95%, Medium (CVSS 4.3) ## Questions ### How many vulnerabilities does Ubuntu Linux have? We track 4,170 published vulnerabilities listed under the name Ubuntu Linux, across 76 versions. The most recent Ubuntu Linux flaw added to the known-exploited list is CVE-2022-0492, on 2 June 2026. ### Which Ubuntu Linux vulnerabilities are being exploited? 46 are on the list of flaws known to be exploited. The most recently added are CVE-2022-0492, CVE-2026-31431 and CVE-2018-14634. ### Which versions of Ubuntu Linux do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2022-0492, affects 14.04, 16.04, 18.04, 20.04 and more. The versions for every exploited flaw are listed on this page. ### How do I get alerts for Ubuntu Linux? Create a Precursor Intelligence account and track Ubuntu Linux. 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 Ubuntu Linux? 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