Vulnerability · Published Jul 19, 2022 · Assigned by Zyxel
CVE-2022-30526
High 7.8
In plain English
A high-severity privilege mismanagement in ATP series firmware from Zyxel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, public proof-of-concept code.
Official description
A privilege escalation vulnerability was identified in the CLI command of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG/ZyWALL series firmware versions 4.09 through 4.72, which could allow a local attacker to execute some OS commands with root privileges in some directories on a vulnerable device.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | USG FLEX 100(W) firmware | 4.50 through 5.30 |
| Zyxel | USG FLEX 200 firmware | 4.50 through 5.30 |
| Zyxel | USG FLEX 500 firmware | 4.50 through 5.30 |
| Zyxel | USG FLEX 700 firmware | 4.50 through 5.30 |
| Zyxel | ATP series firmware | 4.32 through 5.30 |
| Zyxel | VPN series firmware | 4.30 through 5.30 |
| Zyxel | USG FLEX 50(W) firmware | 4.16 through 5.30 |
| Zyxel | USG 20(W)-VPN firmware | 4.16 through 5.30 |
| Zyxel | USG/ZyWALL series firmware | 4.09 through 4.72 |
Weakness: CWE-269 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H