# Shiro vulnerabilities > Shiro is made by Apache. We track 17 published vulnerabilities in it, across 39 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 3 November 2021. If you run Shiro, check your version against the exploited flaws below and patch those first. Canonical page: https://www.precursorintelligence.com/product/apache/shiro ## At a glance - **Made by:** [Apache](https://www.precursorintelligence.com/vendors/apache) - **Published vulnerabilities:** 17 - **Known to be exploited:** 1 - **Versions tracked:** 39 - **Most recently added to the known-exploited list:** [CVE-2016-4437](https://www.precursorintelligence.com/what-is/cve-2016-4437), 3 November 2021. We keep watching the list. ## Which versions of Shiro do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. "before 1.2.5" means every version up to, but not including, 1.2.5. - [CVE-2016-4437](https://www.precursorintelligence.com/what-is/cve-2016-4437) (Apache Shiro Code Execution Vulnerability): before 1.2.5 ## Which Shiro vulnerabilities are being exploited? 1 flaw is on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2016-4437](https://www.precursorintelligence.com/what-is/cve-2016-4437): Apache Shiro Code Execution Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 93%, known exploited since 3 November 2021. ## Which Shiro 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-2016-4437](https://www.precursorintelligence.com/what-is/cve-2016-4437): 93%, Critical (CVSS 9.8), known exploited - [CVE-2020-17523](https://www.precursorintelligence.com/what-is/cve-2020-17523): 86%, Critical (CVSS 9.8) - [CVE-2021-41303](https://www.precursorintelligence.com/what-is/cve-2021-41303): 76%, Critical (CVSS 9.8) - [CVE-2010-3863](https://www.precursorintelligence.com/what-is/cve-2010-3863): 55%, Medium (CVSS 5.0) - [CVE-2020-13933](https://www.precursorintelligence.com/what-is/cve-2020-13933): 44%, High (CVSS 7.5) - [CVE-2022-32532](https://www.precursorintelligence.com/what-is/cve-2022-32532): 26%, Critical (CVSS 9.8) - [CVE-2020-11989](https://www.precursorintelligence.com/what-is/cve-2020-11989): 24%, Critical (CVSS 9.8) - [CVE-2020-1957](https://www.precursorintelligence.com/what-is/cve-2020-1957): 23%, Critical (CVSS 9.8) - [CVE-2016-6802](https://www.precursorintelligence.com/what-is/cve-2016-6802): 9.7%, High (CVSS 7.5) - [CVE-2019-12422](https://www.precursorintelligence.com/what-is/cve-2019-12422): 9.1%, High (CVSS 7.5) ## Questions ### How many vulnerabilities does Shiro have? We track 17 published vulnerabilities listed under the name Shiro, across 39 versions. The most recent Shiro flaw added to the known-exploited list is CVE-2016-4437, on 3 November 2021. ### Which Shiro vulnerabilities are being exploited? 1 is on the list of flaws known to be exploited. The most recently added is CVE-2016-4437. ### Which versions of Shiro do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2016-4437, affects before 1.2.5. The versions for every exploited flaw are listed on this page. ### How do I get alerts for Shiro? Create a Precursor Intelligence account and track Shiro. 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 Shiro? 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