Strix
26.1K

CVE-2022-40603

MEDIUMCVSS 6.1/10EPSS 0.36%

Last modified

CVE-2022-40603 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
6.1/10

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

EPSS Probability
0.36%

27.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ZyxelAtp800 Firmware>= 4.32, <= 5.31
ZyxelAtp700 Firmware>= 4.32, <= 5.31
ZyxelAtp500 Firmware>= 4.32, <= 5.31
ZyxelAtp200 Firmware>= 4.32, <= 5.31
ZyxelAtp100 Firmware>= 4.32, <= 5.31
ZyxelAtp100w Firmware>= 4.32, <= 5.31
ZyxelUsg Flex 100w Firmware>= 4.50, <= 5.31
ZyxelUsg Flex 200 Firmware>= 4.50, <= 5.31
ZyxelUsg Flex 500 Firmware>= 4.50, <= 5.31
ZyxelUsg Flex 700 Firmware>= 4.50, <= 5.31
ZyxelUsg Flex 50w Firmware>= 4.50, <= 5.31
ZyxelVpn1000 Firmware>= 4.30, <= 5.31
ZyxelVpn300 Firmware>= 4.30, <= 5.31
ZyxelVpn100 Firmware>= 4.30, <= 5.31
ZyxelVpn50 Firmware>= 4.30, <= 5.31
ZyxelUsg40 Firmware>= 4.30, <= 4.72
ZyxelUsg40w Firmware>= 4.30, <= 4.72
ZyxelUsg60 Firmware>= 4.30, <= 4.72
ZyxelUsg60w Firmware>= 4.30, <= 4.72

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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 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.
How severe is CVE-2022-40603?
CVE-2022-40603 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.
How do I fix CVE-2022-40603?
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-2022-40603?

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

Scan your code now

Source: NVD / NIST