Medium 6.5Published May 25, 2026

CVE-2026-4795A 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(AC…

Updated under an hour ago (Oct 26, 2026, 3:40 AM ET)

Does this affect you?

It affects Zyxel GS1200-5v3 firmware and 4 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Zyxel GS1200-5v3 firmware

Exploited in the last 30 days

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.

CVSS: 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Zyxel
NVD analysis: Deferred
Record last updated: May 26, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Zyxel GS1200-5v3 firmware zyxel:gs1200_5v3_firmware (from the name)	through 1.00(ACPS.2)C0	CNA record
Zyxel GS1200-8v3 firmware zyxel:gs1200_8v3_firmware (from the name)	through 1.00(ACPT.2)C0	CNA record
Zyxel GS1200-5HPv3 firmware zyxel:gs1200_5hpv3_firmware (from the name)	through 1.00(ACPU.2)C0	CNA record
Zyxel GS1200-8HPv3 firmware zyxel:gs1200_8hpv3_firmware (from the name)	through 1.00(ACPV.2)C0	CNA record
Zyxel GS1200-10v3 firmware zyxel:gs1200_10v3_firmware (from the name)	through 1.00(ACPW.2)C0	CNA record

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.