Usg20-VPN Firmware vulnerabilitiesAnd the versions its exploited flaws hit.
Usg20-VPN Firmware is made by Zyxel. We track 15 published vulnerabilities in it, across 10 versions. 4 of them are on the list of flaws known to be exploited, the newest added on 5 June 2023. If you run Usg20-VPN Firmware, check your version against the exploited flaws below and patch those first.
The most recent Usg20-VPN Firmware flaw added to the known-exploited list is CVE-2023-33009, on 5 June 2023. We keep watching the known-exploited list.
Which versions of Usg20-VPN Firmware do the exploited flaws hit?
Each exploited flaw lists the versions it affects, usually as ranges. "4.60 to before 5.36" means from 4.60 up to, but not including, 5.36. Find your version, then patch.
- CVE-2023-33009Exploited list, 5 Jun 2023
Zyxel Multiple Firewalls Buffer Overflow Vulnerability
4.60 to before 5.365.365.36-patch1 - CVE-2023-33010Exploited list, 5 Jun 2023
Zyxel Multiple Firewalls Buffer Overflow Vulnerability
4.30 to before 5.365.365.36-patch1 - CVE-2020-9054Exploited list, 25 Mar 2022
Zyxel Multiple NAS Devices OS Command Injection Vulnerability
4.35 to before 4.35(abaq.3)c0 - CVE-2020-29583Exploited list, 3 Nov 2021
Zyxel Multiple Products Use of Hard-Coded Credentials Vulnerability
4.60
Which Usg20-VPN Firmware vulnerabilities are being exploited?
4 flaws are on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 9.8Zyxel Multiple Firewalls Buffer Overflow Vulnerability
Zyxel ATP, USG FLEX, USG FLEX 50(W), USG20(W)-VPN, VPN, and ZyWALL/USG firewalls contain a buffer overflow vulnerability in the notification function that could allow an unauthenticated attacker to cause...
- 9.8Zyxel Multiple Firewalls Buffer Overflow Vulnerability
Zyxel ATP, USG FLEX, USG FLEX 50(W), USG20(W)-VPN, VPN, and ZyWALL/USG firewalls contain a buffer overflow vulnerability in the ID processing function that could allow an unauthenticated attacker to cause...
- 9.8Zyxel Multiple NAS Devices OS Command Injection Vulnerability
Multiple Zyxel network-attached storage (NAS) devices contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code.
- 9.8Zyxel Multiple Products Use of Hard-Coded Credentials Vulnerability
Zyxel firewalls (ATP, USG, VM) and AP Controllers (NXC2500 and NXC5500) contain a use of hard-coded credentials vulnerability in an undocumented account ("zyfwp") with an unchangeable password.
Which Usg20-VPN 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. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- >99%
Multiple ZyXEL network-attached storage (NAS) devices running firmware version 5.21 contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute...
- 90%
Firmware version 4.60 of Zyxel USG devices contains an undocumented account (zyfwp) with an unchangeable password.
- 2.3%CVE-2021-35029Critical
An authentication bypasss vulnerability in the web-based management interface of Zyxel USG/Zywall series firmware versions 4.35 through 4.64 and USG Flex, ATP, and VPN series firmware versions 4.35 through 5.01,...
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1 flaw being exploited affects software Acme tracks
Zyxel ATP, USG FLEX, USG FLEX 50(W), USG20(W)-VPN, VPN, and ZyWALL/USG firewalls contain a buffer overflow vulnerability in the notification function that could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and remote code execution on an affected device.
- Matched to
- Usg20-VPN Firmware on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 15 published vulnerabilities listed under the name Usg20-VPN Firmware, across 10 versions. The most recent Usg20-VPN Firmware flaw added to the known-exploited list is CVE-2023-33009, on 5 June 2023.
4 are on the list of flaws known to be exploited. The most recently added are CVE-2023-33009, CVE-2023-33010 and CVE-2020-9054.
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.
Create a Precursor Intelligence account and track Usg20-VPN 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.