VulnerabilityModified

CVE-2023-28767

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.

HIGH 8.8EPSS 0.40%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 3.1: 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.40% probability · 34th percentile
CISA KEV: Not listed
Weakness: CWE-78
Affected: 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 · zyxel/usg flex 500 firmware · zyxel/usg flex 50w firmware · zyxel/usg flex 700 firmware · zyxel/zywall vpn100 firmware · zyxel/zywall vpn2s firmware · zyxel/zywall vpn300 firmware · zyxel/zywall vpn50 firmware · zyxel/zywall vpn 100 firmware · zyxel/zywall vpn 300 firmware · zyxel/zywall vpn 50 firmware · zyxel/usg 20w-vpn firmware · zyxel/zywall atp100 firmware · zyxel/zywall atp100w firmware · zyxel/zywall atp200 firmware · zyxel/zywall atp500 firmware · +2 more
Source: security@zyxel.com.tw

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.