Switch GS1900 Series - V2.90 Patch 3 Firmware Release

Zyxel_Melen · October 23

Zyxel Switch GS1900 Series Release Note

(Click Hyperlink to download the firmware directly)

Zyxel GS1900-8 - V2.90(AAHH.3)C0

Zyxel GS1900-8HP - V2.90(AAHI.3)C0

Zyxel GS1900-8HP(Rev. B1) - V2.90(AAHI.3)C0

Zyxel GS1900-10HP - V2.90(AAZI.3)C0

Zyxel GS1900-16 - V2.90(AAHJ.3)C0

Zyxel GS1900-24E - V2.90(AAHK.3)C0

Zyxel GS1900-24EP - V2.90(ABTO.3)C0

Zyxel GS1900-24 - V2.90(AAHL.3)C0

Zyxel GS1900-24HPv2 - V2.90(ABTP.3)C0

Zyxel GS1900-48 - V2.90(AAHN.3)C0

Zyxel GS1900-48HPv2 - V2.90(ABTQ.3)C0

1. Fixed Pre-authentication out-of-bounds write vulnerability. (CVE-2026- 107441).

Please refer to the Download Link for more details.

Weishaupt · November 1

The PDF change history shows a 2.90(Axxx.2) release on 05/22/2026.

It seems this has never been shared in the community. What are the changes of the .2 release?

Weishaupt · November 2

The PDF change history shows a 2.90(Axxx.2) release on 05/22/2026.

It seems this has never been published to this community. What are the changes of this release?

Zyxel_Melen · November 2

Thanks for pointing it out. Please check this post: