# IP Phone 8821-EX Firmware vulnerabilities > IP Phone 8821-EX Firmware is made by Cisco. We track 6 published vulnerabilities in it, across 8 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 3 November 2021. If you run IP Phone 8821-EX Firmware, check your version against the exploited flaws below and patch those first. Canonical page: https://www.precursorintelligence.com/product/cisco/ip_phone_8821-ex_firmware ## At a glance - **Made by:** [Cisco](https://www.precursorintelligence.com/vendors/cisco) - **Published vulnerabilities:** 6 - **Known to be exploited:** 1 - **Versions tracked:** 8 - **Most recently added to the known-exploited list:** [CVE-2020-3161](https://www.precursorintelligence.com/what-is/cve-2020-3161), 3 November 2021. We keep watching the list. ## Which versions of IP Phone 8821-EX Firmware do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. - [CVE-2020-3161](https://www.precursorintelligence.com/what-is/cve-2020-3161) (Cisco IP Phones Web Server Remote Code Execution and Denial-of-Service Vulnerability): 10.3(1)es14, 11.0(1), 11.0(5)sr1 ## Which IP Phone 8821-EX Firmware vulnerabilities are being exploited? 1 flaw is on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2020-3161](https://www.precursorintelligence.com/what-is/cve-2020-3161): Cisco IP Phones Web Server Remote Code Execution and Denial-of-Service Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 84%, known exploited since 3 November 2021. ## Which IP Phone 8821-EX Firmware 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-2020-3161](https://www.precursorintelligence.com/what-is/cve-2020-3161): 84%, Critical (CVSS 9.8), known exploited - [CVE-2019-1716](https://www.precursorintelligence.com/what-is/cve-2019-1716): 3.1%, Critical (CVSS 9.8) - [CVE-2019-1763](https://www.precursorintelligence.com/what-is/cve-2019-1763): 1.9%, High (CVSS 7.5) - [CVE-2019-1765](https://www.precursorintelligence.com/what-is/cve-2019-1765): 1.4%, Medium (CVSS 6.5) - [CVE-2019-1764](https://www.precursorintelligence.com/what-is/cve-2019-1764): 0.7%, High (CVSS 8.8) - [CVE-2023-20018](https://www.precursorintelligence.com/what-is/cve-2023-20018): 0.6%, Medium (CVSS 6.5) ## Questions ### How many vulnerabilities does IP Phone 8821-EX Firmware have? We track 6 published vulnerabilities listed under the name IP Phone 8821-EX Firmware, across 8 versions. The most recent IP Phone 8821-EX Firmware flaw added to the known-exploited list is CVE-2020-3161, on 3 November 2021. ### Which IP Phone 8821-EX Firmware vulnerabilities are being exploited? 1 is on the list of flaws known to be exploited. The most recently added is CVE-2020-3161. ### Which versions of IP Phone 8821-EX Firmware do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2020-3161, affects 10.3(1)es14, 11.0(1), 11.0(5)sr1. The versions for every exploited flaw are listed on this page. ### How do I get alerts for IP Phone 8821-EX Firmware? Create a Precursor Intelligence account and track IP Phone 8821-EX Firmware. 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 IP Phone 8821-EX Firmware? 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