Is CVE-2023-28767 actively exploited?

CVE-2023-28767 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2023-28767?

CVE-2023-28767 has a CVSS score of 8.8 (HIGH severity). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2023-28767?

Patch guidance is available from zyxel security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2023-28767.

Fix CVE-2023-28767 - HIGH zyxel usg 2200-vpn firmware

Q: Which products are affected by CVE-2023-28767?

22 products: zyxel usg 2200-vpn firmware, zyxel usg flex 100 firmware, zyxel usg flex 100w firmware, zyxel usg flex 200 firmware, zyxel usg flex 50 firmware, and 17 more.

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 Metrics

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: adjacent network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-78 · OS Command Injection CWE-78 · OS Command Injection

Metadata

Primary Vendor: ZYXEL
Published: 7/17/2023
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

zyxel : usg_2200-vpn_firmwarezyxel : usg_flex_100_firmwarezyxel : usg_flex_100w_firmwarezyxel : usg_flex_200_firmwarezyxel : usg_flex_50_firmwarezyxel : usg_flex_500_firmwarezyxel : usg_flex_50w_firmwarezyxel : usg_flex_700_firmwarezyxel : zywall_vpn100_firmwarezyxel : zywall_vpn2s_firmwarezyxel : zywall_vpn300_firmwarezyxel : zywall_vpn50_firmwarezyxel : zywall_vpn_100_firmwarezyxel : zywall_vpn_300_firmwarezyxel : zywall_vpn_50_firmwarezyxel : usg_20w-vpn_firmwarezyxel : zywall_atp100_firmwarezyxel : zywall_atp100w_firmwarezyxel : zywall_atp200_firmwarezyxel : zywall_atp500_firmwarezyxel : zywall_atp700_firmwarezyxel : zywall_atp800_firmware

Remediation Guidance

Executive Summary

View on NIST NVD