Zyxel USG FLEX series firmware

productEU

A product tracked in the threat graph; the vulnerabilities below are known to affect it.

by severity
4critical11high8medium0low
updated 2026-10-27
01

vulnerabilities (51)

Related CVEs.

IDseverity exploitable
CVE-2023-28771US—OT criticalKEV
CVE-2023-33010UScritical9.8OT criticalKEV
CVE-2023-33009US—OT criticalKEV
CVE-2024-11667UScritical9.8OT criticalKEV
CVE-2023-33012US—Exploit
CVE-2022-0342UScritical9.8—
CVE-2022-0734USmedium6.1—
CVE-2022-26531UShigh7.8—
CVE-2025-9133US—OT elevated—
CVE-2022-26532UShigh7.8—
CVE-2022-38547UShigh7.2—
CVE-2021-35029UScritical9.8—
CVE-2023-27991UShigh8.8—
CVE-2025-11730US——
CVE-2025-8078US——
CVE-2024-7203US——
CVE-2024-42060US——
CVE-2024-42059US——
CVE-2023-6398US——
CVE-2024-42057US——
CVE-2023-22913UShigh8.1—
CVE-2023-22915UShigh7.5—
CVE-2023-22914UShigh7.2—
CVE-2023-6764US——
CVE-2023-4398UShigh7.5—
CVE-2023-22917UShigh7.5—
CVE-2023-22918USmedium6.5—
CVE-2023-34139UShigh8.8—
CVE-2022-0910USmedium6.5—
CVE-2023-22916UShigh8.1—
CVE-2023-34141US——
CVE-2023-34138US——
CVE-2023-6399USmedium6.5—
CVE-2024-42058US——
CVE-2024-6343US——
CVE-2026-14818US——
CVE-2023-35139USmedium6.1—
CVE-2023-28767US——
CVE-2022-40603USmedium6.1—
CVE-2023-27990USmedium4.8—
CVE-2023-33011US——
CVE-2024-42061US——
CVE-2023-6397USmedium5.3—
CVE-2023-34140US——
CVE-2023-35136US——
CVE-2023-4397US——
CVE-2023-37926US——
CVE-2023-5960US——
CVE-2023-37925US——
CVE-2023-5650US——
showing 50 of 51
02

weaknesses (8)

The flaw types (CWEs) most of these CVEs share.

  • CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')16 CVEs
  • CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')8 CVEs
  • CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')6 CVEs
  • CWE-269Improper Privilege Management4 CVEs
  • CWE-134Use of Externally-Controlled Format String3 CVEs
  • CWE-20Improper Input Validation3 CVEs
  • CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')3 CVEs
  • CWE-287Improper Authentication3 CVEs
03

sources (1)

Which sources assert this record, and when.

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