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CVE-2022-38547

HIGHCVSS 7.2/10EPSS 2.81%

Last modified

CVE-2022-38547 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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.. EPSS estimates a 2.81% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
2.81%

84.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ZyxelAtp100 Firmware>= 4.32, <= 5.32
ZyxelAtp200 Firmware>= 4.32, <= 5.32
ZyxelAtp700 Firmware>= 4.32, <= 5.32
ZyxelAtp500 Firmware>= 4.32, <= 5.32
ZyxelAtp100w Firmware>= 4.32, <= 5.32
ZyxelAtp800 Firmware>= 4.32, <= 5.32
ZyxelUsg Flex 50 Firmware>= 4.50, <= 5.32
ZyxelUsg Flex 200 Firmware>= 4.50, <= 5.32
ZyxelUsg Flex 500 Firmware>= 4.50, <= 5.32
ZyxelUsg Flex 700 Firmware>= 4.50, <= 5.32
ZyxelUsg Flex 100w Firmware>= 4.50, <= 5.32
ZyxelUsg Flex 100 Firmware>= 4.50, <= 5.32
ZyxelVpn1000 Firmware>= 4.30, <= 5.32
ZyxelUsg20w-Vpn Firmware>= 4.30, <= 5.32
ZyxelUsg20-Vpn Firmware>= 4.30, <= 5.32
ZyxelVpn50 Firmware>= 4.30, <= 5.32
ZyxelVpn300 Firmware>= 4.30, <= 5.32
ZyxelVpn100 Firmware>= 4.30, <= 5.32
ZyxelUsg40 Firmware>= 4.20, <= 4.72
ZyxelUsg40w Firmware>= 4.20, <= 4.72
ZyxelUsg60 Firmware>= 4.20, <= 4.72
ZyxelUsg60w Firmware>= 4.20, <= 4.72
ZyxelZywall 110 Firmware>= 4.20, <= 4.72
ZyxelZywall 1100 Firmware>= 4.20, <= 4.72
ZyxelZywall 310 Firmware>= 4.20, <= 4.72

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2022-38547?
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.
How severe is CVE-2022-38547?
CVE-2022-38547 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 2.81% probability of exploitation in the next 30 days.
How do I fix CVE-2022-38547?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-38547?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST