# Zyxel USG20(W)-VPN series firmware.

Every CVE that names Zyxel USG20(W)-VPN series firmware among its affected products, newest first. Vendors and products are as the CNA wrote them.

## Records, newest first

- [Path traversal in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2026-14818.md)
  `CVE-2026-14818` · CVE record: Zyxel ATP series firmware and 3 more · CVSS 7.2 High · Not analysed yet · Published 4 Aug 2026 · Tags: Path traversal
- [OS command injection in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2025-11730.md)
  `CVE-2025-11730` · CVE record: Zyxel ATP series firmware and 3 more · CVSS 7.2 High · Not analysed yet · Published 5 Feb 2026 · Tags: Command injection
- [Missing authorization in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2025-9133.md)
  `CVE-2025-9133` · CVE record: Zyxel ATP series firmware and 3 more · CVSS 8.1 High · Not analysed yet · Published 21 Oct 2025 · Tags: Broken access control
- [OS command injection in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2025-8078.md)
  `CVE-2025-8078` · CVE record: Zyxel ATP series firmware and 3 more · CVSS 7.2 High · Not analysed yet · Published 21 Oct 2025 · Tags: Command injection
- [Path traversal in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2024-11667.md)
  `CVE-2024-11667` · CVE record: Zyxel ATP series firmware and 3 more · CVSS 7.5 High · Critical (KEV) · In CISA KEV, ransomware · Not analysed yet · Published 27 Nov 2024 · Tags: Path traversal
- [Cross-site scripting in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2024-42061.md)
  `CVE-2024-42061` · CVE record: Zyxel ATP series firmware and 3 more · CVSS 6.1 Medium · Not analysed yet · Published 3 Sept 2024 · Tags: Cross-site scripting (XSS)
- [OS command injection in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2024-42060.md)
  `CVE-2024-42060` · CVE record: Zyxel ATP series firmware and 3 more · CVSS 7.2 High · Not analysed yet · Published 3 Sept 2024 · Tags: Command injection
- [OS command injection in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2024-42059.md)
  `CVE-2024-42059` · CVE record: Zyxel ATP series firmware and 3 more · CVSS 7.2 High · Not analysed yet · Published 3 Sept 2024 · Tags: Command injection
- [NULL pointer dereference in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2024-42058.md)
  `CVE-2024-42058` · CVE record: Zyxel ATP series firmware and 3 more · CVSS 7.5 High · Not analysed yet · Published 3 Sept 2024 · Tags: Memory corruption
- [OS command injection in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2024-42057.md)
  `CVE-2024-42057` · CVE record: Zyxel ATP series firmware and 3 more · CVSS 8.1 High · Not analysed yet · Published 3 Sept 2024 · Tags: Command injection
- [Buffer overflow in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2024-6343.md)
  `CVE-2024-6343` · CVE record: Zyxel ATP series firmware and 3 more · CVSS 4.9 Medium · Not analysed yet · Published 3 Sept 2024 · Tags: Memory corruption
- [Uncontrolled format string in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-6764.md)
  `CVE-2023-6764` · CVE record: Zyxel ATP series firmware and 3 more · CVSS 8.1 High · Not analysed yet · Published 20 Feb 2024 · Tags: Memory corruption
- [Uncontrolled format string in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-6399.md)
  `CVE-2023-6399` · CVE record: Zyxel ATP series firmware and 4 more · CVSS 5.7 Medium · Not analysed yet · Published 20 Feb 2024 · Tags: Memory corruption
- [OS command injection in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-6398.md)
  `CVE-2023-6398` · CVE record: Zyxel ATP series firmware and 4 more · CVSS 7.2 High · Not analysed yet · Published 20 Feb 2024 · Tags: Command injection
- [Improper privilege management in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-5797.md)
  `CVE-2023-5797` · CVE record: Zyxel ATP series firmware and 4 more · CVSS 5.5 Medium · Not analysed yet · Published 28 Nov 2023 · Tags: Privilege escalation
- [Improper privilege management in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-5650.md)
  `CVE-2023-5650` · CVE record: Zyxel ATP series firmware and 4 more · CVSS 5.5 Medium · Not analysed yet · Published 28 Nov 2023 · Tags: Privilege escalation
- [Integer overflow in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-4398.md)
  `CVE-2023-4398` · CVE record: Zyxel ATP series firmware and 4 more · CVSS 7.5 High · Not analysed yet · Published 28 Nov 2023 · Tags: Memory corruption
- [Buffer overflow in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-4397.md)
  `CVE-2023-4397` · CVE record: Zyxel ATP series firmware and 3 more · CVSS 4.4 Medium · Not analysed yet · Published 28 Nov 2023 · Tags: Memory corruption
- [Buffer overflow in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-37926.md)
  `CVE-2023-37926` · CVE record: Zyxel ATP series firmware and 4 more · CVSS 5.5 Medium · Not analysed yet · Published 28 Nov 2023 · Tags: Memory corruption
- [Improper privilege management in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-37925.md)
  `CVE-2023-37925` · CVE record: Zyxel ATP series firmware and 4 more · CVSS 5.5 Medium · Not analysed yet · Published 28 Nov 2023 · Tags: Privilege escalation
- [Cross-site scripting in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-35139.md)
  `CVE-2023-35139` · CVE record: Zyxel ATP series firmware and 4 more · CVSS 5.2 Medium · Not analysed yet · Published 28 Nov 2023 · Tags: Cross-site scripting (XSS)
- [Improper input validation in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-35136.md)
  `CVE-2023-35136` · CVE record: Zyxel ATP series firmware and 4 more · CVSS 5.5 Medium · Not analysed yet · Published 28 Nov 2023 · Tags: CWE-20
- [OS command injection in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-34141.md)
  `CVE-2023-34141` · CVE record: Zyxel ATP series firmware and 4 more · CVSS 8.0 High · Not analysed yet · Published 17 Jul 2023 · Tags: Command injection
- [Buffer overflow in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-34140.md)
  `CVE-2023-34140` · CVE record: Zyxel ATP series firmware and 4 more · CVSS 6.5 Medium · Not analysed yet · Published 17 Jul 2023 · Tags: Memory corruption
- [OS command injection in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-34138.md)
  `CVE-2023-34138` · CVE record: Zyxel ATP series firmware and 4 more · CVSS 8.0 High · Not analysed yet · Published 17 Jul 2023 · Tags: Command injection
- [OS command injection in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-33012.md)
  `CVE-2023-33012` · CVE record: Zyxel ATP series firmware and 4 more · CVSS 8.8 High · Not analysed yet · Published 17 Jul 2023 · Tags: Command injection
- [Uncontrolled format string in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-33011.md)
  `CVE-2023-33011` · CVE record: Zyxel ATP series firmware and 4 more · CVSS 8.8 High · Not analysed yet · Published 17 Jul 2023 · Tags: Memory corruption
- [OS command injection in Zyxel ATP series firmware and others](https://agentprime.io/advisories/CVE-2023-28767.md)
  `CVE-2023-28767` · CVE record: Zyxel ATP series firmware and 4 more · CVSS 8.8 High · Not analysed yet · Published 17 Jul 2023 · Tags: Command injection

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