CVE-2026-4795

State: Published
Severity: 6.5 Medium
Published: May 26, 2026
Updated: May 26, 2026
Reserved: Mar 25, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	Zyxel

Weaknesses

CWE-862 Missing Authorization

Affected Products

Product	Versions
GS1200-5v3 firmwareZyxel	<= 1.00(ACPS.2)C0Affected
GS1200-8v3 firmwareZyxel	<= 1.00(ACPT.2)C0Affected
GS1200-5HPv3 firmwareZyxel	<= 1.00(ACPU.2)C0Affected
GS1200-8HPv3 firmwareZyxel	<= 1.00(ACPV.2)C0Affected
GS1200-10v3 firmwareZyxel	<= 1.00(ACPW.2)C0Affected

References

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

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