What is CVE-2026-4795?

CVE-2026-4795 is a medium-severity vulnerability in Zyxel Gs1200-10v3 Firmware, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-05-26.

How severe is CVE-2026-4795?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Zyxel Gs1200-10v3 Firmware

CVE-2026-4795

A missing authorization vulnerability in Zyxel GS1200-5v3 firmware versions through 1.00(ACPS.2)C0, GS1200-8v3 firmware versions through 1.00(ACPT.2)C0, GS1200-5HPv3 firmware versions through 1.00(ACPU.2)C0, GS1200-8HPv3 firmware versions…

Vulnerability class: Broken Access Control

EPSS: 0.000 (13.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Zyxel Gs1200-10v3 Firmware — versions <= 1.00(ACPW.2)C0
Zyxel Gs1200-5hpv3 Firmware — versions <= 1.00(ACPU.2)C0
Zyxel Gs1200-5v3 Firmware — versions <= 1.00(ACPS.2)C0
Zyxel Gs1200-8hpv3 Firmware — versions <= 1.00(ACPV.2)C0
Zyxel Gs1200-8v3 Firmware — versions <= 1.00(ACPT.2)C0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

security@zyxel.com.tw (vendor-advisory)

Frequently asked questions

What is CVE-2026-4795?: CVE-2026-4795 is a medium-severity vulnerability in Zyxel Gs1200-10v3 Firmware, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-05-26.
How severe is CVE-2026-4795?: Medium severity. CVSS v3 base score is 6.5 out of 10.