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...

PT-2026-49603

Name of the Vulnerable Software and Affected Versions Zyxel GS1900-48HPv2 versions prior to 2.90ABTQ.1C0 Description A stack-based buffer overflow exists in the CGI program. This flaw allows an unauthenticated attacker on the local area network LAN to potentially execute operating system commands...

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...