CVE-2022-38547: OS Command Injection

Published Feb 7, 2023
·
Updated

A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG series firmware versions 4.20 through 4.72, VPN series firmware versions 4.30 through 5.32, USG FLEX series firmware versions 4.50 through 5.32, and ATP series firmware versions 4.32 through 5.32, which could allow an authenticated attacker with administrator privileges to execute OS commands.

Affected Software

50 affected components
Zyxel Atp100 Firmware>=4.32<=5.32
Zyxel Atp100
Zyxel Atp200 Firmware>=4.32<=5.32
Zyxel ATP200
Zyxel Atp700 Firmware>=4.32<=5.32
Zyxel Atp700
Zyxel Atp500 Firmware>=4.32<=5.32
Zyxel ATP500
Zyxel Atp100w Firmware>=4.32<=5.32
Zyxel Atp100w
Zyxel Atp800 Firmware>=4.32<=5.32
Zyxel ATP800
Zyxel Usg Flex 50 Firmware>=4.50<=5.32
Zyxel USG FLEX 50
Zyxel USG FLEX 200 firmware>=4.50<=5.32
Zyxel USG FLEX 200
Zyxel USG FLEX 500 firmware>=4.50<=5.32
Zyxel USG FLEX 500
Zyxel USG FLEX 700 firmware>=4.50<=5.32
Zyxel USG FLEX 700
Zyxel Usg Flex 100w Firmware>=4.50<=5.32
Zyxel Usg Flex 100w
Zyxel Usg Flex 100 Firmware>=4.50<=5.32
Zyxel Usg Flex 100
Zyxel Vpn1000 Firmware>=4.30<=5.32
Zyxel Vpn1000
Zyxel Usg20w-vpn Firmware>=4.30<=5.32
Zyxel USG20W-VPN
Zyxel Usg20-vpn Firmware>=4.30<=5.32
Zyxel USG20-VPN
Zyxel Vpn50 Firmware>=4.30<=5.32
Zyxel Vpn50
Zyxel Vpn300 Firmware>=4.30<=5.32
Zyxel Vpn300
Zyxel Vpn100 Firmware>=4.30<=5.32
Zyxel Vpn100
Zyxel Usg40 Firmware>=4.20<=4.72
Zyxel USG40
Zyxel Usg40w Firmware>=4.20<=4.72
Zyxel USG40W
Zyxel Usg60 Firmware>=4.20<=4.72
Zyxel USG60
Zyxel Usg60w Firmware>=4.20<=4.72
Zyxel USG60W
Zyxel Zywall 110 Firmware>=4.20<=4.72
Zyxel ZyWALL 110
Zyxel Zywall 1100 Firmware>=4.20<=4.72
Zyxel ZyWALL 1100
Zyxel Zywall 310 Firmware>=4.20<=4.72
Zyxel ZyWALL 310

Event History

Feb 7, 2023
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is CVE-2022-38547?

CVE-2022-38547 refers to a post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG series firmware versions 4.20 through 4.72, VPN series firmware versions 4.30 through 5.32, USG FLEX series firmware versions 4.50 through 5.32, and ATP series firmware versions 4.32 through 5.32.

2

How severe is CVE-2022-38547?

CVE-2022-38547 has a severity rating of 7.2 (high).

3

Which software versions are affected by CVE-2022-38547?

CVE-2022-38547 affects Zyxel ZyWALL/USG series firmware versions 4.20 through 4.72, VPN series firmware versions 4.30 through 5.32, USG FLEX series firmware versions 4.50 through 5.32, and ATP series firmware versions 4.32 through 5.32.

4

How can I fix CVE-2022-38547?

To fix CVE-2022-38547, it is recommended to update the firmware of Zyxel ZyWALL/USG series to versions 4.73 or higher, VPN series to versions 5.33 or higher, USG FLEX series to versions 5.33 or higher, and ATP series to versions 5.33 or higher.

5

Where can I find more information about CVE-2022-38547?

You can find more information about CVE-2022-38547 in the Zyxel Security Advisory for Post-Authentication RCE in Firewalls.

Company

Resources

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