Vulnerability intelligence

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 crafted HTTP request.

CVSS Score

8.8

High

EPSS — Exploit Probability

0.3%

Riskier than 24% of all CVEs

Exploitation

Not in CISA KEV

No federal exploitation record

Remediation

unknown

Check vendor advisories

NVD entry PoC / advisory

1 article across 1 outlet · first covered Jun 18, 2026 · latest Jun 18, 2026

Coverage timeline

Zyxel fixes CVE-2026-7273 buffer overflow in GS1900 switches
securityonline.info · Jun 18, 2026