Description
An out-of-bounds write vulnerability in the CGI program of Zyxel GS1900-24E firmware versions through 2.90(AAHK.2)C0 could allow an unauthenticated adjacent attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Zyxel | GS1900-24E firmware | <= 2.90(AAHK.2)C0 | — |
| Zyxel | GS1900-8 firmware | <= 2.90(AAHH.2)C0 | — |
| Zyxel | GS1900-8HP firmware | <= 2.90(AAHI.2)C0 | — |
| Zyxel | GS1900-10HP firmware | <= 2.90(AAZI.2)C0 | — |
| Zyxel | GS1900-16 firmware | <= 2.90(AAHJ.2)C0 | — |
| Zyxel | GS1900-24 firmware | <= 2.90(AAHL.2)C0 | — |
| Zyxel | GS1900-24EP firmware | <= 2.90(ABTO.2)C0 | — |
| Zyxel | GS1900-HPv2 firmware | <= 2.90(ABTP.2)C0 | — |
| Zyxel | GS1900-48 firmware | <= 2.90(AAHN.2)C0 | — |
| Zyxel | GS1900-48HPv2 firmware | <= 2.90(ABTQ.2)C0 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
foxcornlab/zyxel-gs1900-scanner ★ 0 · Nov 5, 2026
Detection-only local triage for Zyxel GS1900 CVE-2026-107441 (exploited zero-day): grades model + firmware against Zyxel's .3 fix table and catches the .2 trap
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- NCSC-2026-0468 Kwetsbaarheid verholpen in Zyxel product NCSC-NL (Netherlands) · Nov 5, 2026
- WID-SEC-2026-4330 Zyxel Switch: Schwachstelle ermöglicht Codeausführung BSI CERT-Bund (WID) · Nov 3, 2026