CVE-2026-4795 — Zyxel / GS1200-5v3 firmware

Description (CNA)

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 through 1.00(ACPV.2)C0, and GS1200-10v3 firmware versions through 1.00(ACPW.2)C0 could allow a LAN-based, unauthenticated attacker to read the system configuration from a log file via a crafted HTTP request.

Affected (CNA)

Vendor / product	Versions
Zyxel / GS1200-5v3 firmware	affected <= 1.00(ACPS.2)C0
Zyxel / GS1200-8v3 firmware	affected <= 1.00(ACPT.2)C0
Zyxel / GS1200-5HPv3 firmware	affected <= 1.00(ACPU.2)C0
Zyxel / GS1200-8HPv3 firmware	affected <= 1.00(ACPV.2)C0
Zyxel / GS1200-10v3 firmware	affected <= 1.00(ACPW.2)C0

CWE

CWE-862

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-missing-authorization-vulnerability-in-gs1200v3-series-switches-05-26-2026

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.