Summary
Zyxel GS1900 series switches contain a stack-based buffer overflow vulnerability in the CGI program which could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.
- Vendor
- Zyxel
- Product
- GS1900 Series Switches
- Added to KEV
- Sep 21, 2026
- Remediation due
- Sep 24, 2026 (US federal deadline)
- Ransomware use
- Not known
- Weakness
- CWE-121
- EPSS
- 2.7% as of Nov 12
In the news
- No Asia-Pacific article names this CVE yet.
Linked
Actors named alongside it:
none
Incidents exploiting it:
- none recorded
References