CVE-2026-107441: Zyxel GS1900-24E firmware (High, CVSS 8.8)
- CVSS
- 8.8 High (v3.1)
- EPSS
- 0.3% chance of exploitation in the next 30 days (higher than 22% of CVEs)
- Exploited in the wild
- Not on CISA’s KEV list
- Public exploit
- Yes, reported in 1 GitHub repository
- Weakness
- CWE-787
- Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Published
- Nov 3, 2026
What it is
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.
Description from the National Vulnerability Database.
What to do
Check whether you run Zyxel GS1900-24E firmware, then apply the vendor’s fix or mitigation from the advisories below. Because this flaw is exploited or has public exploit code, treat it as urgent and check for signs of compromise, not just the patch level.
ThreatRoundup coverage
Zyxel’s June Patch Didn’t Stop the Switch Hack. This One Does
Sources: NVD, FIRST EPSS, CISA KEV, and public exploit databases (availability only). ThreatRoundup reports whether public exploit code exists but never links to it: fake proof-of-concepts that infect security researchers are common. This page updates automatically.