CVE-2026-4795

Missing Authorization Allows LAN‑Based Unauthenticated Read of System Configuration

Published May 26, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Zyxel
Zyxel gs1200-5 Firmware
Zyxel gs1200-5hp Firmware
Zyxel gs1200-8 Firmware
Zyxel gs1200-8hp Firmware
Vendors & Products Zyxel
Zyxel gs1200-5 Firmware
Zyxel gs1200-5hp Firmware
Zyxel gs1200-8 Firmware
Zyxel gs1200-8hp Firmware
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Missing Authorization Allows LAN‑Based Unauthenticated Read of System Configuration
Type Values Removed Values Added
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.
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Zyxel
Published
Updated
May 26, 2026, 12:18 PM
Reserved
Mar 25, 2026, 2:49 AM
Status
Deferred
Published
May 26, 2026, 2:16 AM
Modified
Jul 24, 2026, 11:10 AM