# Fabric Operating System vulnerabilities > Fabric Operating System is made by Broadcom. We track 80 published vulnerabilities in it, across 91 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 28 April 2025. If you run Fabric Operating System, check your version against the exploited flaws below and patch those first. Canonical page: https://www.precursorintelligence.com/product/broadcom/fabric_operating_system ## At a glance - **Made by:** [Broadcom](https://www.precursorintelligence.com/vendors/broadcom) - **Published vulnerabilities:** 80 - **Known to be exploited:** 1 - **Versions tracked:** 91 - **Most recently added to the known-exploited list:** [CVE-2025-1976](https://www.precursorintelligence.com/what-is/cve-2025-1976), 28 April 2025. We keep watching the list. ## Which versions of Fabric Operating System do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. "9.1.0 to before 9.1.1d7" means from 9.1.0 up to, but not including, 9.1.1d7. - [CVE-2025-1976](https://www.precursorintelligence.com/what-is/cve-2025-1976) (Broadcom Brocade Fabric OS Code Injection Vulnerability): 9.1.0 to before 9.1.1d7 ## Which Fabric Operating System vulnerabilities are being exploited? 1 flaw is on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2025-1976](https://www.precursorintelligence.com/what-is/cve-2025-1976): Broadcom Brocade Fabric OS Code Injection Vulnerability. Medium, CVSS 6.7, chance of use in 30 days 0.7%, known exploited since 28 April 2025. ## Which Fabric Operating System 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-2020-1967](https://www.precursorintelligence.com/what-is/cve-2020-1967): 53%, High (CVSS 7.5) - [CVE-2024-3596](https://www.precursorintelligence.com/what-is/cve-2024-3596): 15%, Critical (CVSS 9.0) - [CVE-2020-15778](https://www.precursorintelligence.com/what-is/cve-2020-15778): 14%, High (CVSS 7.4) - [CVE-2021-22876](https://www.precursorintelligence.com/what-is/cve-2021-22876): 5.3%, Medium (CVSS 5.3) - [CVE-2019-19050](https://www.precursorintelligence.com/what-is/cve-2019-19050): 5.1%, High (CVSS 7.5) - [CVE-2004-1663](https://www.precursorintelligence.com/what-is/cve-2004-1663): 4.2%, Medium (CVSS 5.0) - [CVE-2023-38709](https://www.precursorintelligence.com/what-is/cve-2023-38709): 3.9%, High (CVSS 7.3) - [CVE-2019-25013](https://www.precursorintelligence.com/what-is/cve-2019-25013): 3.6%, Medium (CVSS 5.9) - [CVE-2019-18805](https://www.precursorintelligence.com/what-is/cve-2019-18805): 3.5%, Critical (CVSS 9.8) - [CVE-2019-19069](https://www.precursorintelligence.com/what-is/cve-2019-19069): 3.5%, High (CVSS 7.5) ## Questions ### How many vulnerabilities does Fabric Operating System have? We track 80 published vulnerabilities listed under the name Fabric Operating System, across 91 versions. The most recent Fabric Operating System flaw added to the known-exploited list is CVE-2025-1976, on 28 April 2025. ### Which Fabric Operating System vulnerabilities are being exploited? 1 is on the list of flaws known to be exploited. The most recently added is CVE-2025-1976. ### Which versions of Fabric Operating System do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2025-1976, affects 9.1.0 to before 9.1.1d7. The versions for every exploited flaw are listed on this page. ### How do I get alerts for Fabric Operating System? Create a Precursor Intelligence account and track Fabric Operating System. 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 Fabric Operating System? 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