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Weakness (CWE) CWE-129 Improper Validation of Array Index 1

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Vendor: MarlinFirmware × Clear all filters

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…

CVSS 4.0HIGH 8.3· Network · No auth · No interaction · EPSS 0.00647 · Published 2026-06-24 · Fixed CWE-129

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