CVE-2026-4795 Missing authorization in GS1200-10v3 firmware
An unauthenticated LAN attacker can read system configuration from a log file via a crafted HTTP request due to missing authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4795?
CVE-2026-4795 is a medium-severity missing authorization vulnerability in Zyxel GS1200-10v3 firmware, published on 26 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-4795?
How do I fix CVE-2026-4795?
No fix has been published for CVE-2026-4795 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-4795 being exploited?
There is no known exploitation of CVE-2026-4795 in the wild and no public exploit code.
Sources
Also known as GHSA-2r2c-hg87-r54j.