CVE-2026-109445

Name of the Vulnerable Software and Affected Versions PLANET GS-5220-8P2T2S (hardware version 3.0) versions prior to 3.2412b261008

Description A stack-based buffer overflow occurs when the device processes an oversized webstax auth HTTP Cookie value. This happens because the value is copied into a fixed-size stack buffer without proper length validation. An unauthenticated remote attacker can send a crafted HTTP request to overwrite the saved return address and corrupt stack memory, which may lead to memory corruption and a denial of service.

Recommendations Update to version 3.2412b261008.