Buffer overflow in Zyxel Gs1900-10hp Firmware

CVE-2026-7273

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…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-7273?
CVE-2026-7273 is a high-severity vulnerability in Zyxel Gs1900-10hp Firmware, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-06-16.
How severe is CVE-2026-7273?
High severity. CVSS v3 base score is 8.8 out of 10.