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CVE-2026-7273

GS1900-48HPv2 firmware · buffer overflow

CVSS 3.1 8.8 HIGHCheck source for fixed versionsCISA KEV

Original advisory

cve-program · CVE-2026-7273

Published

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.

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Affected versions, risk and source history

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CVE-2026-7273 · CVE overview and exploitation status

cve-program · CVE-2026-7273

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-stack-based-buffer-overflow-vulnerability-in-gs1900-series-switches-06-16-2026

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