# Skynas Firmware vulnerabilities > Skynas Firmware is made by Synology. We track 13 published vulnerabilities in it, across 1 version. 1 of them is on the list of flaws known to be exploited, the newest added on 6 April 2022. If you run Skynas Firmware, check your version against the exploited flaws below and patch those first. Canonical page: https://www.precursorintelligence.com/product/synology/skynas_firmware ## At a glance - **Made by:** [Synology](https://www.precursorintelligence.com/vendors/synology) - **Published vulnerabilities:** 13 - **Known to be exploited:** 1 - **Versions tracked:** 1 - **Most recently added to the known-exploited list:** [CVE-2021-3156](https://www.precursorintelligence.com/what-is/cve-2021-3156), 6 April 2022. We keep watching the list. ## Which Skynas Firmware vulnerabilities are being exploited? 1 flaw is on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2021-3156](https://www.precursorintelligence.com/what-is/cve-2021-3156): Sudo Heap-Based Buffer Overflow Vulnerability. High, CVSS 7.8, chance of use in 30 days >99%, known exploited since 6 April 2022. ## Which Skynas 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-2021-3156](https://www.precursorintelligence.com/what-is/cve-2021-3156): >99%, High (CVSS 7.8), known exploited - [CVE-2021-26561](https://www.precursorintelligence.com/what-is/cve-2021-26561): 2.1%, Critical (CVSS 9.0) - [CVE-2021-26562](https://www.precursorintelligence.com/what-is/cve-2021-26562): 1.9%, Critical (CVSS 9.0) - [CVE-2021-26566](https://www.precursorintelligence.com/what-is/cve-2021-26566): 1.5%, High (CVSS 8.3) - [CVE-2021-26567](https://www.precursorintelligence.com/what-is/cve-2021-26567): 1.1%, High (CVSS 7.8) - [CVE-2020-27652](https://www.precursorintelligence.com/what-is/cve-2020-27652): 0.8%, High (CVSS 8.3) - [CVE-2021-26560](https://www.precursorintelligence.com/what-is/cve-2021-26560): 0.8%, Critical (CVSS 9.0) - [CVE-2021-26565](https://www.precursorintelligence.com/what-is/cve-2021-26565): 0.7%, High (CVSS 8.3) - [CVE-2020-27648](https://www.precursorintelligence.com/what-is/cve-2020-27648): 0.7%, High (CVSS 8.3) - [CVE-2021-26564](https://www.precursorintelligence.com/what-is/cve-2021-26564): 0.7%, High (CVSS 8.3) ## Questions ### How many vulnerabilities does Skynas Firmware have? We track 13 published vulnerabilities listed under the name Skynas Firmware, across 1 version. The most recent Skynas Firmware flaw added to the known-exploited list is CVE-2021-3156, on 6 April 2022. ### Which Skynas Firmware vulnerabilities are being exploited? 1 is on the list of flaws known to be exploited. The most recently added is CVE-2021-3156. ### How do I get alerts for Skynas Firmware? Create a Precursor Intelligence account and track Skynas 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 Skynas 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