CVE-2026-7273

No fix known ExploitedEPSS 3%CVSS 8.8

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.

Published 2026-06-16 · In CISA KEV since 2026-09-21 · CVE record · OSV

Products: Zyxel GS1900-48HPv2 firmware, zyxel gs1900-8_firmware, zyxel gs1900-8hp_firmware, zyxel gs1900-10hp_firmware, zyxel gs1900-16_firmware, zyxel gs1900-24_firmware, zyxel gs1900-24e_firmware, Zyxel GS1900-24EP firmware, Zyxel GS1900-24HPv2 firmware, zyxel gs1900-48_firmware