Zyxel Usg Flex 700h Firmware vulnerabilities

4 CVEs affecting Zyxel Usg Flex 700h Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2023-6764, published 2024-02-20.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2023-6398, published 2024-02-20. High severity, CVSS 7.2. EPSS: 1.3% chance of exploitation in the next 30 days. A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50…
CVE-2023-6764, published 2024-02-20. High severity, CVSS 8.1. EPSS: 0.9% chance of exploitation in the next 30 days. A format string vulnerability in a function of the IPSec VPN feature in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50…
CVE-2023-6399, published 2024-02-20. Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days. A format string vulnerability in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware…
CVE-2023-6397, published 2024-02-20. Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days. A null pointer dereference vulnerability in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1 and USG FLEX series firmware versions from 4.50 through 5.37 Patch 1 could…