VulnCheck KEV: CVE-2026-7273

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...

CVE-2026-7273

A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90ABTQ.1C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request...

CVE-2026-7273

A stack-based buffer overflow in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(ABTQ.1)C0 allows an unauthenticated LAN-based attacker to execute OS commands via a crafted HTTP request. The CVSS 3.1 score is 8.8 (HIGH) with full impact on confidentiality, integrity, and ava...

EUVD-2026-37030

A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90ABTQ.1C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request...

CVE-2026-7273

A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90ABTQ.1C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request...

CVE-2026-7273: Stack-based Buffer Overflow

A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90ABTQ.1C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request...

PT-2026-49603

Name of the Vulnerable Software and Affected Versions Zyxel GS1900-8 versions prior to 2.90AAHH.2C0 Zyxel GS1900-8HP versions prior to 2.90AAHI.2C0 Zyxel GS1900-10HP versions prior to 2.90AAZI.2C0 Zyxel GS1900-16 versions prior to 2.90AAHJ.2C0 Zyxel GS1900-24 versions prior to 2.90AAHL.2C0 Zyxel...