CVE-2023-33011 — HIGH (8.8)

Q: How severe is CVE-2023-33011?

CVE-2023-33011 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2023-33011?

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.

Vulnerability Description

A format string vulnerability in the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions 5.10 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 5.10 through 5.36 Patch 2, and VPN series firmware versions 5.00 through 5.36 Patch 2, could allow an unauthenticated, LAN-based attacker to execute some OS commands by using a crafted PPPoE configuration on an affected device when the cloud management mode is enabled.

CVSS Score

8.8

HIGH

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

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

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)

CWE-134

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-2023-33011?

CVE-2023-33011 is a vulnerability with a CVSS score of 8.8 (HIGH). A format string vulnerability in the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions...

How severe is CVE-2023-33011?

CVE-2023-33011 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-2023-33011?

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.