Zyxel Usg Flex Series Firmware
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By the Year
In 2026 there have been 0 vulnerabilities in Zyxel Usg Flex Series Firmware. Last year, in 2025 Usg Flex Series Firmware had 1 security vulnerability published. Right now, Usg Flex Series Firmware is on track to have less security vulnerabilities in 2026 than it did last year.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2026 | 0 | 0.00 |
| 2025 | 1 | 7.20 |
It may take a day or so for new Usg Flex Series Firmware vulnerabilities to show up in the stats or in the list of recent security vulnerabilities. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Zyxel Usg Flex Series Firmware Security Vulnerabilities
Zyxel USG Flex & ATP Firmware Cmd Injection (V4.325.40)
CVE-2025-8078
7.2 - High
- October 21, 2025
A post-authentication command injection vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.40, USG FLEX series firmware versions from V4.50 through V5.40, USG FLEX 50(W) series firmware versions from V4.16 through V5.40, and USG20(W)-VPN series firmware versions from V4.16 through V5.40 could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on the affected device by passing a crafted string as an argument to a CLI command.
Shell injection
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