CVE-2026-7273
NVD HIGH 8.8 · published 2026-06-16 · 1 on the wire
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.
Exploited in the wild
Yes
CISA added it 2026-09-21. An observation, not a forecast.
EPSS · 30-day forecast
2%
Chance of exploitation in the next 30 days, 83th percentile of all CVEs. A forecast; KEV outranks it.
CVSS · NVD
8.8
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Internet exposure
—
No exposure census on this CVE's dispatches.
On the wire1
- nvd.nist.gov ↗
- cisa.gov · KEV catalogue ↗
- first.org · EPSS ↗
- www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-stack-based-buffer-overflow-vulnerability-in-gs1900-series-switches-06-16-2026 ↗
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-7273 ↗
- www.greynoise.io/blog/open-season-on-kapibala-attacker-steals-government-records-wordpress-exploitation ↗
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