Usg Flex 500 Firmware vulnerabilitiesAnd the versions its exploited flaws hit.
Usg Flex 500 Firmware is made by Zyxel. We track 34 published vulnerabilities in it, across 11 versions. 5 of them are on the list of flaws known to be exploited, the newest added on 5 June 2023. If you run Usg Flex 500 Firmware, check your version against the exploited flaws below and patch those first.
The most recent Usg Flex 500 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 Usg Flex 500 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
4.50 to before 5.365.365.36-patch1 - CVE-2023-28771Exploited list, 31 May 2023
Zyxel Multiple Firewalls OS Command Injection Vulnerability
4.60 to before 5.36 - CVE-2022-30525Exploited list, 16 May 2022
Zyxel Multiple Firewalls OS Command Injection Vulnerability
5.00 to 5.30 - CVE-2020-29583Exploited list, 3 Nov 2021
Zyxel Multiple Products Use of Hard-Coded Credentials Vulnerability
4.60
Which Usg Flex 500 Firmware vulnerabilities are being exploited?
5 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 Firewalls OS Command Injection Vulnerability
Zyxel ATP, USG FLEX, VPN, and ZyWALL/USG firewalls allow for improper error message handling which could allow an unauthenticated attacker to execute OS commands remotely by sending crafted packets to an affected device.
- 9.8Zyxel Multiple Firewalls OS Command Injection Vulnerability
A command injection vulnerability in the CGI program of some Zyxel firewall versions could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.
- 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 Usg Flex 500 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%
Improper error message handling in Zyxel ZyWALL/USG series firmware versions 4.60 through 4.73, VPN series firmware versions 4.60 through 5.35, USG FLEX series firmware versions 4.60 through 5.35, and ATP series...
- 90%
Firmware version 4.60 of Zyxel USG devices contains an undocumented account (zyfwp) with an unchangeable password.
Running Usg Flex 500 Firmware? We'll keep checking.
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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
- Usg Flex 500 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 34 published vulnerabilities listed under the name Usg Flex 500 Firmware, across 11 versions. The most recent Usg Flex 500 Firmware flaw added to the known-exploited list is CVE-2023-33009, on 5 June 2023.
5 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.
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 Usg Flex 500 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.