CVE-2026-56111

תיאור (מקור, אנגלית)

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 memory by supplying out-of-range X and Y grid indices. Attackers can send a single crafted G-code command via USB serial, network interface, or malicious gcode file to write an attacker-controlled 32-bit float value past the z_values array bounds, corrupting adjacent firmware variables and causing denial of service or firmware state corruption.

מדדים

CVSS 3.1

9.1 (CRITICAL) מקור הציון: CNA CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CVSS 4.0

8.3 (HIGH) מקור הציון: CNA CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — סבירות ניצול

1% (אחוזון 000) נכון ל-13/8/2026

CWE

CWE-129

קישורים

• https://github.com/MarlinFirmware/Marlin/commit/1f255d16ec2d456454fd444494cfb3‮…
• https://github.com/MarlinFirmware/Marlin/issues/28467
• https://github.com/MarlinFirmware/Marlin/pull/28468
• https://www.vulncheck.com/advisories/marlin-firmware-out-of-bounds-write-via-m‮…