Medium severity · published Dec 6, 2022
CVE-2022-40603
A cross-site scripting (XSS) vulnerability in the CGI program of Zyxel ZyWALL/USG series firmware versions 4.30 through 4.72, VPN series firmware versions 4.30 through 5.31, USG…
6.1
CVSS
0.4%
EPSS
No
On KEV
Description
A cross-site scripting (XSS) vulnerability in the CGI program of Zyxel ZyWALL/USG series firmware versions 4.30 through 4.72, VPN series firmware versions 4.30 through 5.31, USG FLEX series firmware versions 4.50 through 5.31, and ATP series firmware versions 4.32 through 5.31, which could allow an attacker to trick a user into visiting a crafted URL with the XSS payload. Then, the attacker could gain access to some browser-based information if the malicious script is executed on the victim’s browser.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% 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 5.31 · source: NVD
AF
Atp100w Firmware · Zyxel
4.32 through 5.31 · source: NVD
AF
Atp200 Firmware · Zyxel
4.32 through 5.31 · source: NVD
AF
Atp500 Firmware · Zyxel
4.32 through 5.31 · source: NVD
AF
Atp700 Firmware · Zyxel
4.32 through 5.31 · source: NVD
AF
Atp800 Firmware · Zyxel
4.32 through 5.31 · source: NVD
UF
Usg Flex 100w Firmware · Zyxel
4.50 through 5.31 · source: NVD
UF
Usg Flex 200 Firmware · Zyxel
4.50 through 5.31 · source: NVD
UF
Usg Flex 500 Firmware · Zyxel
4.50 through 5.31 · source: NVD
UF
Usg Flex 50w Firmware · Zyxel
4.50 through 5.31 · source: NVD
UF
Usg Flex 700 Firmware · Zyxel
4.50 through 5.31 · source: NVD
UF
Usg40 Firmware · Zyxel
4.30 through 4.72 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-40603
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-40603
Vendor Advisory
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-xss-vulnerability-in-firewalls
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