# Fxos vulnerabilities > Fxos is made by Cisco. We track 9 published vulnerabilities in it, across 84 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 10 December 2021. If you run Fxos, check your version against the exploited flaws below and patch those first. Canonical page: https://www.precursorintelligence.com/product/cisco/fxos ## At a glance - **Made by:** [Cisco](https://www.precursorintelligence.com/vendors/cisco) - **Published vulnerabilities:** 9 - **Known to be exploited:** 1 - **Versions tracked:** 84 - **Most recently added to the known-exploited list:** [CVE-2021-44228](https://www.precursorintelligence.com/what-is/cve-2021-44228), 10 December 2021. We keep watching the list. ## Which versions of Fxos do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. - [CVE-2021-44228](https://www.precursorintelligence.com/what-is/cve-2021-44228) (Apache Log4j2 Remote Code Execution Vulnerability): 6.2.3, 6.3.0, 6.4.0, 6.5.0, 6.6.0, 6.7.0, 7.0.0, 7.1.0 ## Which Fxos vulnerabilities are being exploited? 1 flaw is on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2021-44228](https://www.precursorintelligence.com/what-is/cve-2021-44228): Apache Log4j2 Remote Code Execution Vulnerability. Critical, CVSS 10.0, chance of use in 30 days >99%, known exploited since 10 December 2021. ## Which Fxos 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-2018-0300](https://www.precursorintelligence.com/what-is/cve-2018-0300): 7.2%, High (CVSS 7.2) - [CVE-2017-3883](https://www.precursorintelligence.com/what-is/cve-2017-3883): 4.5%, High (CVSS 8.6) - [CVE-2020-3120](https://www.precursorintelligence.com/what-is/cve-2020-3120): 1.6%, Medium (CVSS 6.5) - [CVE-2018-0331](https://www.precursorintelligence.com/what-is/cve-2018-0331): 0.6%, Medium (CVSS 6.5) - [CVE-2020-3171](https://www.precursorintelligence.com/what-is/cve-2020-3171): 0.5%, High (CVSS 7.8) - [CVE-2018-0294](https://www.precursorintelligence.com/what-is/cve-2018-0294): 0.4%, Medium (CVSS 6.7) - [CVE-2021-34714](https://www.precursorintelligence.com/what-is/cve-2021-34714): 0.4%, High (CVSS 7.4) - [CVE-2023-20016](https://www.precursorintelligence.com/what-is/cve-2023-20016): 0.1%, Medium (CVSS 6.5) ## Questions ### How many vulnerabilities does Fxos have? We track 9 published vulnerabilities listed under the name Fxos, across 84 versions. The most recent Fxos flaw added to the known-exploited list is CVE-2021-44228, on 10 December 2021. ### Which Fxos vulnerabilities are being exploited? 1 is on the list of flaws known to be exploited. The most recently added is CVE-2021-44228. ### Which versions of Fxos do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2021-44228, affects 6.2.3, 6.3.0, 6.4.0, 6.5.0 and more. The versions for every exploited flaw are listed on this page. ### How do I get alerts for Fxos? Create a Precursor Intelligence account and track Fxos. 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 Fxos? 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