TI-2026-40494 CVE-2026-56111 · GHSA-x5qg-qgv8-q7cr
Marlin Firmware 2.1.2.7 Out-of-Bounds Write via M421 G-code Handler
Priority HIGH 75
Marlin Firmware through 2.1.2.7, fixed in commit 1f255d1, when built with MESH_BED_LEVELING enabled, contains an out-of-bounds write vulnerability in the M421 G-code handler that allows attackers to corrupt firmware memo…