CVE-2026-4795

MEDIUM

Zyxel GS1200-5v3 Firmware - Missing Authorization

Title source: rule

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.

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory

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

Scores

CVSS v3 6.5

EPSS 0.0023

EPSS Percentile 14.0%

Attack Vector ADJACENT_NETWORK

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-862

Status published

Products (5)

Zyxel/GS1200-10v3 firmware <= 1.00(ACPW.2)C0

Zyxel/GS1200-5HPv3 firmware <= 1.00(ACPU.2)C0

Zyxel/GS1200-5v3 firmware <= 1.00(ACPS.2)C0

Zyxel/GS1200-8HPv3 firmware <= 1.00(ACPV.2)C0

Zyxel/GS1200-8v3 firmware <= 1.00(ACPT.2)C0

Published May 26, 2026

Tracked Since May 26, 2026