CVE-2023-28767
Zyxel · published 2023-07-17
Source record Collected from the National Vulnerability Database (NVD)
Description
Description by Zyxel Corporation via the CVE Program.
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.
Status at the source
- NVD status: Modified
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | ATP series firmware | 5.10 through 5.36: affected |
| Zyxel | USG FLEX series firmware | 5.00 through 5.36: affected |
| Zyxel | USG FLEX 50(W) series firmware | 5.10 through 5.36: affected |
| Zyxel | USG20(W)-VPN series firmware | 5.10 through 5.36: affected |
| Zyxel | VPN series firmware | 5.00 through 5.36: affected |
Added by CISA-ADP (Authorized Data Publisher)
| Vendor | Product | Versions |
|---|---|---|
| zyxel | atp_series_firmware | 5.10 – 5.36 and earlier: affected |
| zyxel | usg_flex_series_firmware | 5.0.0 – 5.36 and earlier: affected |
| zyxel | usg_flex_50\/w\/_series_firmware | 5.10 – 5.36 and earlier: affected |
| zyxel | usg_flex_series_firmware | 5.0.0 – 5.36 and earlier: affected |
| zyxel | atp_series_firmware | 5.10 – 5.36 and earlier: affected |
Products named in NVD's CPE match criteria (22)
cpe:2.3:o:zyxel:usg_2200-vpn_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_50_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:zywall_vpn100_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:zywall_vpn2s_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:zywall_vpn300_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:zywall_vpn50_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:zywall_vpn_100_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:zywall_vpn_300_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:zywall_vpn_50_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_20w-vpn_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:zywall_atp100_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:zywall_atp100w_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:zywall_atp200_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:zywall_atp500_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:zywall_atp700_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:zywall_atp800_firmware:*:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 8.8 HIGH — as published by Zyxel Corporation (Secondary)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: none · Automatable: no · Technical impact: total
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers
Source dates: published 2023-07-17, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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