# Nagios vulnerabilities > Nagios has 281 published vulnerabilities across 17 products in our catalogue. 4 of them are on the list of flaws known to be exploited, so criminals are using them now. The most affected product is Nagios Xi, with 178. If you run Nagios software, patch the exploited flaws first. Canonical page: https://www.precursorintelligence.com/vendors/nagios ## At a glance - **Published vulnerabilities:** 281 - **Known to be exploited:** 4 - **Products:** 17 - **Versions:** 400 - **Most recently added to the known-exploited list:** [CVE-2021-25296](https://www.precursorintelligence.com/what-is/cve-2021-25296), 18 January 2022. We keep watching the list. ## Which Nagios products have the most vulnerabilities? - [Nagios Xi](https://www.precursorintelligence.com/product/nagios/nagios_xi): 178 published vulnerabilities, 97 versions - [Nagios](https://www.precursorintelligence.com/product/nagios/nagios): 37 published vulnerabilities, 87 versions - [Log Server](https://www.precursorintelligence.com/product/nagios/log_server): 22 published vulnerabilities, 23 versions - [Fusion](https://www.precursorintelligence.com/product/nagios/fusion): 19 published vulnerabilities, 14 versions - [Nagios Core](https://www.precursorintelligence.com/product/nagios/nagios_core): 5 published vulnerabilities, 66 versions - [Network Analyzer](https://www.precursorintelligence.com/product/nagios/network_analyzer): 5 published vulnerabilities, 11 versions - [Plugins](https://www.precursorintelligence.com/product/nagios/plugins): 3 published vulnerabilities, 22 versions - [Incident Manager](https://www.precursorintelligence.com/product/nagios/incident_manager): 3 published vulnerabilities, 3 versions - [Remote Plug in Executor](https://www.precursorintelligence.com/product/nagios/remote_plug_in_executor): 3 published vulnerabilities, 32 versions - [Nagios Cross Platform Agent](https://www.precursorintelligence.com/product/nagios/nagios_cross_platform_agent): 2 published vulnerabilities, 27 versions Each product page lists its own known-exploited flaws. ## Which Nagios vulnerabilities are being exploited? 4 flaws are on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2021-25296](https://www.precursorintelligence.com/what-is/cve-2021-25296): Nagios XI OS Command Injection. High, CVSS 8.8, chance of use in 30 days 72%, known exploited since 18 January 2022. - [CVE-2021-25297](https://www.precursorintelligence.com/what-is/cve-2021-25297): Nagios XI OS Command Injection. High, CVSS 8.8, chance of use in 30 days 57%, known exploited since 18 January 2022. - [CVE-2021-25298](https://www.precursorintelligence.com/what-is/cve-2021-25298): Nagios XI OS Command Injection. High, CVSS 8.8, chance of use in 30 days 74%, known exploited since 18 January 2022. - [CVE-2019-15949](https://www.precursorintelligence.com/what-is/cve-2019-15949): Nagios XI Remote Code Execution Vulnerability. High, CVSS 8.8, chance of use in 30 days 77%, known exploited since 3 November 2021. ## Which Nagios 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-2021-25299](https://www.precursorintelligence.com/what-is/cve-2021-25299): 98%, Medium (CVSS 6.1) - [CVE-2021-37344](https://www.precursorintelligence.com/what-is/cve-2021-37344): 97%, Critical (CVSS 9.8) - [CVE-2021-38156](https://www.precursorintelligence.com/what-is/cve-2021-38156): 93%, Medium (CVSS 5.4) - [CVE-2020-27988](https://www.precursorintelligence.com/what-is/cve-2020-27988): 91%, Medium (CVSS 5.4) - [CVE-2018-15708](https://www.precursorintelligence.com/what-is/cve-2018-15708): 89%, Critical (CVSS 9.8) - [CVE-2009-2288](https://www.precursorintelligence.com/what-is/cve-2009-2288): 83%, High (CVSS 7.5) - [CVE-2020-35578](https://www.precursorintelligence.com/what-is/cve-2020-35578): 82%, High (CVSS 7.2) - [CVE-2021-37350](https://www.precursorintelligence.com/what-is/cve-2021-37350): 79%, Critical (CVSS 9.8) - [CVE-2020-5791](https://www.precursorintelligence.com/what-is/cve-2020-5791): 79%, High (CVSS 7.2) - [CVE-2019-15949](https://www.precursorintelligence.com/what-is/cve-2019-15949): 77%, High (CVSS 8.8), known exploited ## All Nagios products we track 14 products with at least one tracked version, most vulnerabilities first: - [Nagios Xi](https://www.precursorintelligence.com/product/nagios/nagios_xi): 178 vulnerabilities, 97 versions - [Nagios](https://www.precursorintelligence.com/product/nagios/nagios): 37 vulnerabilities, 87 versions - [Log Server](https://www.precursorintelligence.com/product/nagios/log_server): 22 vulnerabilities, 23 versions - [Fusion](https://www.precursorintelligence.com/product/nagios/fusion): 19 vulnerabilities, 14 versions - [Nagios Core](https://www.precursorintelligence.com/product/nagios/nagios_core): 5 vulnerabilities, 66 versions - [Network Analyzer](https://www.precursorintelligence.com/product/nagios/network_analyzer): 5 vulnerabilities, 11 versions - [Plugins](https://www.precursorintelligence.com/product/nagios/plugins): 3 vulnerabilities, 22 versions - [Incident Manager](https://www.precursorintelligence.com/product/nagios/incident_manager): 3 vulnerabilities, 3 versions - [Remote Plug in Executor](https://www.precursorintelligence.com/product/nagios/remote_plug_in_executor): 3 vulnerabilities, 32 versions - [Nagios Cross Platform Agent](https://www.precursorintelligence.com/product/nagios/nagios_cross_platform_agent): 2 vulnerabilities, 27 versions - [Favorites](https://www.precursorintelligence.com/product/nagios/favorites): 2 vulnerabilities, 1 version - [Remote Plugin Executor](https://www.precursorintelligence.com/product/nagios/remote_plugin_executor): 1 vulnerability, 1 version - [Ndoutils](https://www.precursorintelligence.com/product/nagios/ndoutils): 1 vulnerability, 15 versions - [Business Process Intelligence](https://www.precursorintelligence.com/product/nagios/business_process_intelligence): 1 vulnerability, 1 version ## Questions ### How many vulnerabilities does Nagios have? Our catalogue lists 281 published vulnerabilities across 17 products and 400 versions from Nagios. The most recent Nagios flaw added to the known-exploited list is CVE-2021-25296, on 18 January 2022. ### Which Nagios vulnerabilities are being exploited? 4 Nagios vulnerabilities are on the list of flaws known to be exploited. The most recently added are CVE-2021-25296, CVE-2021-25297 and CVE-2021-25298. The full list is on this page. ### Which Nagios product has the most vulnerabilities? Nagios Xi, with 178 published vulnerabilities. Its own page lists the ones known to be exploited. ### How do I get alerts for new Nagios vulnerabilities? Create a Precursor Intelligence account and track the Nagios products you run. We match them against every published flaw, give each one a risk score from 0 to 100 and tell you as soon as we spot one that affects you, by email, in the app or by webhook. ## Running Nagios? 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