Stack-Based Buffer Overflow Vulnerability
Exploited in the wild. CISA added it to its Known Exploited Vulnerabilities list on 21 Sept 2026.
2.7%
Reading the vendor advisory
Fix it in your code
Each opens with a short prompt that points at Global Hack Map's public runbook for CVE-2026-7273. Nothing runs until you send it.
A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(ABTQ.1)C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.
You are affected if
The fix