Vulnerability Description
The configuration parser fails to sanitize user-controlled input in the Zyxel ATP series firmware versions 5.10 through 5.36, USG FLEX series firmware versions 5.00 through 5.36, USG FLEX 50(W) series firmware versions 5.10 through 5.36, USG20(W)-VPN series firmware versions 5.10 through 5.36, and VPN series firmware versions 5.00 through 5.36. An unauthenticated, LAN-based attacker could leverage the vulnerability to inject some operating system (OS) commands into the device configuration data on an affected device when the cloud management mode is enabled.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | Usg 2200-Vpn Firmware | >= 5.00, < 5.37 |
| Zyxel | Usg 2200-Vpn | - |
| Zyxel | Usg Flex 100 Firmware | >= 5.00, < 5.37 |
| Zyxel | Usg Flex 100 | - |
| Zyxel | Usg Flex 100W Firmware | >= 5.00, < 5.37 |
| Zyxel | Usg Flex 100W | - |
| Zyxel | Usg Flex 200 Firmware | >= 5.00, < 5.37 |
| Zyxel | Usg Flex 200 | - |
| Zyxel | Usg Flex 50 Firmware | >= 5.00, < 5.37 |
| Zyxel | Usg Flex 50 | - |
| Zyxel | Usg Flex 500 Firmware | >= 5.00, < 5.37 |
| Zyxel | Usg Flex 500 | - |
| Zyxel | Usg Flex 50W Firmware | >= 5.00, < 5.37 |
| Zyxel | Usg Flex 50W | - |
| Zyxel | Usg Flex 700 Firmware | >= 5.00, < 5.37 |
| Zyxel | Usg Flex 700 | - |
| Zyxel | Zywall Vpn100 Firmware | >= 5.00, < 5.37 |
| Zyxel | Zywall Vpn100 | - |
| Zyxel | Zywall Vpn2S Firmware | >= 5.00, < 5.37 |
| Zyxel | Zywall Vpn2S | - |
Related Weaknesses (CWE)
References
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisVendor Advisory
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisVendor Advisory
FAQ
What is CVE-2023-28767?
CVE-2023-28767 is a vulnerability with a CVSS score of 8.8 (HIGH). The configuration parser fails to sanitize user-controlled input in the Zyxel ATP series firmware versions 5.10 through 5.36, USG FLEX series firmware versions 5.00 through 5.36, USG FLEX 50(W) serie...
How severe is CVE-2023-28767?
CVE-2023-28767 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-28767?
Check the references section above for vendor advisories and patch information. Affected products include: Zyxel Usg 2200-Vpn Firmware, Zyxel Usg 2200-Vpn, Zyxel Usg Flex 100 Firmware, Zyxel Usg Flex 100, Zyxel Usg Flex 100W Firmware.