# Ncs 5516 vulnerabilities > Ncs 5516 is made by Cisco. We track 25 published vulnerabilities in it, across 0 versions. 3 of them are on the list of flaws known to be exploited, the newest added on 23 May 2022. If you run Ncs 5516, check your version against the exploited flaws below and patch those first. Canonical page: https://www.precursorintelligence.com/product/cisco/ncs_5516 ## At a glance - **Made by:** [Cisco](https://www.precursorintelligence.com/vendors/cisco) - **Published vulnerabilities:** 25 - **Known to be exploited:** 3 - **Versions tracked:** 0 - **Most recently added to the known-exploited list:** [CVE-2022-20821](https://www.precursorintelligence.com/what-is/cve-2022-20821), 23 May 2022. We keep watching the list. ## Which Ncs 5516 vulnerabilities are being exploited? 3 flaws are on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2022-20821](https://www.precursorintelligence.com/what-is/cve-2022-20821): Cisco IOS XR Open Port Vulnerability. Medium, CVSS 6.5, chance of use in 30 days 11%, known exploited since 23 May 2022. - [CVE-2020-3118](https://www.precursorintelligence.com/what-is/cve-2020-3118): Cisco IOS XR Software Discovery Protocol Format String Vulnerability. High, CVSS 8.8, chance of use in 30 days 12%, known exploited since 3 November 2021. - [CVE-2020-3569](https://www.precursorintelligence.com/what-is/cve-2020-3569): Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability. High, CVSS 8.6, chance of use in 30 days 3.3%, known exploited since 3 November 2021. ## Which Ncs 5516 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-2020-3118](https://www.precursorintelligence.com/what-is/cve-2020-3118): 12%, High (CVSS 8.8), known exploited - [CVE-2022-20821](https://www.precursorintelligence.com/what-is/cve-2022-20821): 11%, Medium (CVSS 6.5), known exploited - [CVE-2020-3569](https://www.precursorintelligence.com/what-is/cve-2020-3569): 3.3%, High (CVSS 8.6), known exploited - [CVE-2020-3120](https://www.precursorintelligence.com/what-is/cve-2020-3120): 1.6%, Medium (CVSS 6.5) - [CVE-2021-34718](https://www.precursorintelligence.com/what-is/cve-2021-34718): 1.6%, High (CVSS 8.1) - [CVE-2019-16027](https://www.precursorintelligence.com/what-is/cve-2019-16027): 1.5%, Medium (CVSS 6.5) - [CVE-2021-34737](https://www.precursorintelligence.com/what-is/cve-2021-34737): 1.3%, High (CVSS 7.5) - [CVE-2019-16020](https://www.precursorintelligence.com/what-is/cve-2019-16020): 1.3%, High (CVSS 8.6) - [CVE-2019-15989](https://www.precursorintelligence.com/what-is/cve-2019-15989): 1.3%, High (CVSS 8.6) - [CVE-2019-16022](https://www.precursorintelligence.com/what-is/cve-2019-16022): 1.3%, High (CVSS 8.6) ## Questions ### How many vulnerabilities does Ncs 5516 have? We track 25 published vulnerabilities listed under the name Ncs 5516, across 0 versions. The most recent Ncs 5516 flaw added to the known-exploited list is CVE-2022-20821, on 23 May 2022. ### Which Ncs 5516 vulnerabilities are being exploited? 3 are on the list of flaws known to be exploited. The most recently added are CVE-2022-20821, CVE-2020-3118 and CVE-2020-3569. ### How do I get alerts for Ncs 5516? Create a Precursor Intelligence account and track Ncs 5516. 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 Ncs 5516? 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