# Vpn300 Firmware vulnerabilities > Vpn300 Firmware is made by Zyxel. We track 24 published vulnerabilities in it, across 8 versions. 6 of them are on the list of flaws known to be exploited, the newest added on 5 June 2023. If you run Vpn300 Firmware, check your version against the exploited flaws below and patch those first. Canonical page: https://www.precursorintelligence.com/product/zyxel/vpn300_firmware ## At a glance - **Made by:** [Zyxel](https://www.precursorintelligence.com/vendors/zyxel) - **Published vulnerabilities:** 24 - **Known to be exploited:** 6 - **Versions tracked:** 8 - **Most recently added to the known-exploited list:** [CVE-2023-33009](https://www.precursorintelligence.com/what-is/cve-2023-33009), 5 June 2023. We keep watching the list. ## Which versions of Vpn300 Firmware do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. "4.60 to before 5.36" means from 4.60 up to, but not including, 5.36. - [CVE-2023-33009](https://www.precursorintelligence.com/what-is/cve-2023-33009) (Zyxel Multiple Firewalls Buffer Overflow Vulnerability): 4.60 to before 5.36, 5.36, 5.36-patch1 - [CVE-2023-33010](https://www.precursorintelligence.com/what-is/cve-2023-33010) (Zyxel Multiple Firewalls Buffer Overflow Vulnerability): 4.30 to before 5.36, 5.36, 5.36-patch1 - [CVE-2023-28771](https://www.precursorintelligence.com/what-is/cve-2023-28771) (Zyxel Multiple Firewalls OS Command Injection Vulnerability): 4.60 to before 5.36 - [CVE-2022-30525](https://www.precursorintelligence.com/what-is/cve-2022-30525) (Zyxel Multiple Firewalls OS Command Injection Vulnerability): 4.60 to before 5.30 - [CVE-2020-9054](https://www.precursorintelligence.com/what-is/cve-2020-9054) (Zyxel Multiple NAS Devices OS Command Injection Vulnerability): 4.35 to before 4.35(abfc.3)c0 - [CVE-2020-29583](https://www.precursorintelligence.com/what-is/cve-2020-29583) (Zyxel Multiple Products Use of Hard-Coded Credentials Vulnerability): 4.60 ## Which Vpn300 Firmware vulnerabilities are being exploited? 6 flaws are on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2023-33009](https://www.precursorintelligence.com/what-is/cve-2023-33009): Zyxel Multiple Firewalls Buffer Overflow Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 28%, known exploited since 5 June 2023. - [CVE-2023-33010](https://www.precursorintelligence.com/what-is/cve-2023-33010): Zyxel Multiple Firewalls Buffer Overflow Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 29%, known exploited since 5 June 2023. - [CVE-2023-28771](https://www.precursorintelligence.com/what-is/cve-2023-28771): Zyxel Multiple Firewalls OS Command Injection Vulnerability. Critical, CVSS 9.8, chance of use in 30 days >99%, known exploited since 31 May 2023. - [CVE-2022-30525](https://www.precursorintelligence.com/what-is/cve-2022-30525): Zyxel Multiple Firewalls OS Command Injection Vulnerability. Critical, CVSS 9.8, chance of use in 30 days >99%, known exploited since 16 May 2022. - [CVE-2020-9054](https://www.precursorintelligence.com/what-is/cve-2020-9054): Zyxel Multiple NAS Devices OS Command Injection Vulnerability. Critical, CVSS 9.8, chance of use in 30 days >99%, known exploited since 25 March 2022. - [CVE-2020-29583](https://www.precursorintelligence.com/what-is/cve-2020-29583): Zyxel Multiple Products Use of Hard-Coded Credentials Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 90%, known exploited since 3 November 2021. ## Which Vpn300 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-2020-9054](https://www.precursorintelligence.com/what-is/cve-2020-9054): >99%, Critical (CVSS 9.8), known exploited - [CVE-2020-29583](https://www.precursorintelligence.com/what-is/cve-2020-29583): 90%, Critical (CVSS 9.8), known exploited ## Questions ### How many vulnerabilities does Vpn300 Firmware have? We track 24 published vulnerabilities listed under the name Vpn300 Firmware, across 8 versions. The most recent Vpn300 Firmware flaw added to the known-exploited list is CVE-2023-33009, on 5 June 2023. ### Which Vpn300 Firmware vulnerabilities are being exploited? 6 are on the list of flaws known to be exploited. The most recently added are CVE-2023-33009, CVE-2023-33010 and CVE-2023-28771. ### Which versions of Vpn300 Firmware do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2023-33009, affects 4.60 to before 5.36, 5.36, 5.36-patch1. The versions for every exploited flaw are listed on this page. ### How do I get alerts for Vpn300 Firmware? Create a Precursor Intelligence account and track Vpn300 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 Vpn300 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