CVE-2026-56111

Katalog CVE

CVSS 9.1 · Critical EPSS 0,65%

Kerentanan Improper Validation of Array Index. Skor CVSS 3.1 9.1 (Critical) menurut vulncheck.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

24 Juni 2026

Terakhir diubah

14 Juli 2026

Status NVD

Awaiting Analysis

CVSS 3.1

9.1 (Critical), sumber vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-129: Improper Validation of Array Index

EPSS (30 hari)

0,65% peluang dieksploitasi; lebih tinggi dari 49,6% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/MarlinFirmware/Marlin/commit/1f255d16ec2d456454fd444494cfb338d62b0fa1
• 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-m421-g-code-handler