Zyxel
239 CVEs across 38 months on the top 200 list since Feb 2000. Peak rank #5 in Mar 2008. 6 of them are now in CISA KEV.
Zyxel CVEs per month since Feb 2000
Mar 2021: not on the top 200 that monthApr 2021: not on the top 200 that monthMay 2021: not on the top 200 that monthJun 2021: not on the top 200 that monthJul 2021: not on the top 200 that monthAug 2021: not on the top 200 that monthSep 2021: not on the top 200 that monthOct 2021: not on the top 200 that monthNov 2021: not on the top 200 that monthDec 2021: 4 CVEs · 0 critical · 0 now in CISA KEV · rank #151 · mostly GS1900-48HP, GS1900-48HP Firmware, GS1900-48HPV2Jan 2022: not on the top 200 that monthFeb 2022: not on the top 200 that monthMar 2022: 4 CVEs · 2 critical · 0 now in CISA KEV · rank #176 · mostly NR5101 Firmware, NR7101 Firmware, NR7102 FirmwareApr 2022: not on the top 200 that monthMay 2022: 5 CVEs · 1 critical · 1 now in CISA KEV · rank #125 · mostly ATP200 Firmware, ATP500 Firmware, VPN Series FirmwareJun 2022: not on the top 200 that monthJul 2022: not on the top 200 that monthAug 2022: not on the top 200 that monthSep 2022: not on the top 200 that monthOct 2022: not on the top 200 that monthNov 2022: not on the top 200 that monthDec 2022: not on the top 200 that monthJan 2023: 7 CVEs · 0 critical · 0 now in CISA KEV · rank #85 · mostly AX7501-B0 Firmware, LTE7490-M904 Firmware, NR7102 FirmwareFeb 2023: 4 CVEs · 1 critical · 0 now in CISA KEV · rank #183 · mostly Zywall, Atp, VPNMar 2023: not on the top 200 that monthApr 2023: 11 CVEs · 2 critical · 1 now in CISA KEV · rank #68 · mostly Usg Flex 100 Firmware, Usg Flex 50w Firmware, Usg Flex 700 FirmwareMay 2023: 9 CVEs · 2 critical · 2 now in CISA KEV · rank #88 · mostly Nbg-418n V2 Firmware, Nbg-418n Firmware, Zyxel Nbg-418n V2Jun 2023: not on the top 200 that monthJul 2023: 7 CVEs · 0 critical · 0 now in CISA KEV · rank #100 · mostly Zywall VPN50 Firmware, Usg 2200-vpn Firmware, Usg FlexAug 2023: not on the top 200 that monthSep 2023: not on the top 200 that monthOct 2023: not on the top 200 that monthNov 2023: 17 CVEs · 3 critical · 0 now in CISA KEV · rank #37 · mostly Zld, Usg Flex, Usg Flex Series FirmwareDec 2023: not on the top 200 that monthJan 2024: not on the top 200 that monthFeb 2024: not on the top 200 that monthMar 2024: not on the top 200 that monthApr 2024: not on the top 200 that monthMay 2024: not on the top 200 that monthJun 2024: 5 CVEs · 3 critical · 0 now in CISA KEV · rank #160 · mostly NAS326 Firmware, NAS326, NAS542Jul 2024: not on the top 200 that monthAug 2024: not on the top 200 that monthSep 2024: 15 CVEs · 2 critical · 0 now in CISA KEV · rank #46 · mostly Atp Series Firmware, Atp, ZldOct 2024: not on the top 200 that monthNov 2024: not on the top 200 that monthDec 2024: not on the top 200 that monthJan 2025: not on the top 200 that monthFeb 2025: not on the top 200 that monthMar 2025: not on the top 200 that monthApr 2025: not on the top 200 that monthMay 2025: not on the top 200 that monthJun 2025: not on the top 200 that monthJul 2025: not on the top 200 that monthAug 2025: not on the top 200 that monthSep 2025: not on the top 200 that monthOct 2025: not on the top 200 that monthNov 2025: not on the top 200 that monthDec 2025: not on the top 200 that monthJan 2026: not on the top 200 that monthFeb 2026: 8 CVEs · 1 critical · 0 now in CISA KEV · rank #138 · mostly WX5610-B0 Firmware, PX3321-T1 Firmware, PX5301-T0 Firmware
In the lens
The products that kept showing up in Zyxel's monthly top three from Mar 2021 to Feb 2026. Move the lens and the list follows.
Year by year
Each year's months on the top 200 list. Pick a year to read it in the lens.
The record
- Peak rank
- #5 in Mar 2008
- Busiest month
- Jun 2020, 39 CVEs
- Months with a KEV entry
- 5 of 38 on the list
- On the top 200 list
- 38 of 313 monthly snapshots