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High severity · published Feb 7, 2023
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…
7.2
CVSS
2.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.8% · higher than 87% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AF
Atp100 Firmware · Zyxel
4.32 through 5.32 · source: NVD
AF
Atp100w Firmware · Zyxel
4.32 through 5.32 · source: NVD
AF
Atp200 Firmware · Zyxel
4.32 through 5.32 · source: NVD
AF
Atp500 Firmware · Zyxel
4.32 through 5.32 · source: NVD
AF
Atp700 Firmware · Zyxel
4.32 through 5.32 · source: NVD
AF
Atp800 Firmware · Zyxel
4.32 through 5.32 · source: NVD
UF
Usg Flex 100 Firmware · Zyxel
4.50 through 5.32 · source: NVD
UF
Usg Flex 100w Firmware · Zyxel
4.50 through 5.32 · source: NVD
UF
Usg Flex 200 Firmware · Zyxel
4.50 through 5.32 · source: NVD
UF
Usg Flex 50 Firmware · Zyxel
4.50 through 5.32 · source: NVD
UF
Usg Flex 500 Firmware · Zyxel
4.50 through 5.32 · source: NVD
UF
Usg Flex 700 Firmware · Zyxel
4.50 through 5.32 · source: NVD
Affected product
AF
Atp100 Firmware
Zyxel
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-38547
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-38547
Vendor Advisory
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-rce-in-firewalls
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