Status: KEV | Advisory ID: CVE-2026-7273
| CVE | CVE-2026-7273 |
| Affected products | Zyxel GS1900 Series Switches |
| Exploitation status | Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation. |
| Classified as | CWE-121 (Stack-based Buffer Overflow) |
| KEV listing | Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-09-21. |
| Federal remediation deadline | 2026-09-24 (CISA KEV, Binding Operational Directive). |
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.
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-7273 |