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Vulnerability · Published May 26, 2026 · Assigned by Zyxel

CVE-2026-4795

Medium 6.5

In plain English

A medium-severity missing authorization in GS1200-10v3 firmware from Zyxel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.2%top 85.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
Zyxel GS1200-5v3 firmware <= 1.00(ACPS.2)C0
Zyxel GS1200-8v3 firmware <= 1.00(ACPT.2)C0
Zyxel GS1200-5HPv3 firmware <= 1.00(ACPU.2)C0
Zyxel GS1200-8HPv3 firmware <= 1.00(ACPV.2)C0
Zyxel GS1200-10v3 firmware <= 1.00(ACPW.2)C0

Weakness: CWE-862 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References