CVE Tools

USG1100 Firmware

6 CVEs tracked. 2 of them are in CISA KEV.

This hub aggregates every CVE we track for USG1100 Firmware, a product in the networking infrastructure space. Use it to gauge the current risk picture and drill into individual advisories.

USG1100 Firmware CVEs per month

Oct 2024 to Sep 2026. Point at a month, or focus the strip and use the arrow keys.
USG1100 Firmware CVEs per month
MonthCVEs
2024-100
2024-110
2024-120
2025-010
2025-020
2025-030
2025-040
2025-050
2025-060
2025-070
2025-080
2025-090
2025-100
2025-110
2025-120
2026-010
2026-020
2026-030
2026-040
2026-050
2026-060
2026-070
2026-080
2026-090

Severity

How the 6 CVEs score on CVSS. Severity is not exploitation: KEV is counted above.

  • Critical467%
  • Medium233%

Latest CVEs

The 6 most recently published vulnerabilities affecting USG1100 Firmware.

  1. CVE-2021-35029An authentication bypasss vulnerability in the web-based management interface of Zyxel USG/Zywall series firmware versions 4.35 through 4.64 and USG Flex, ATP, and VPN series firmware versions 4.35...9.8
  2. CVE-2020-29583Firmware version 4.60 of Zyxel USG devices contains an undocumented account (zyfwp) with an unchangeable password. The password for this account can be found in cleartext in the firmware. This acco...9.8
  3. CVE-2020-9054ZyXEL NAS products running firmware version 5.21 and earlier are vulnerable to pre-authentication command injection in weblogin.cgi9.8
  4. CVE-2019-12581A reflective Cross-site scripting (XSS) vulnerability in the free_time_failed.cgi CGI program in selected Zyxel ZyWall, USG, and UAG devices allows remote attackers to inject arbitrary web script o...6.1
  5. CVE-2019-12583Missing Access Control in the "Free Time" component of several Zyxel UAG, USG, and ZyWall devices allows a remote attacker to generate guest accounts by directly accessing the account generator. Th...9.1
  6. CVE-2019-9955On Zyxel ATP200, ATP500, ATP800, USG20-VPN, USG20W-VPN, USG40, USG40W, USG60, USG60W, USG110, USG210, USG310, USG1100, USG1900, USG2200-VPN, ZyWALL 110, ZyWALL 310, ZyWALL 1100 devices, the securit...6.1

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