CVE-2026-29972

Katalog CVE

CVSS 8.2 · High EPSS 0,92%

Kerentanan Stack-based Buffer Overflow. Skor CVSS 3.1 8.2 (High) menurut CISA ADP.

Deskripsi (NVD)

nanoMODBUS through v1.22.0 has a stack-based buffer overflow in recv_read_registers_res() in nanomodbus.c. When a client calls nmbs_read_holding_registers() or nmbs_read_input_registers(), the library writes register data from the server response to the caller-provided buffer based on the response's byte_count field before validating that byte_count matches the requested quantity. A malicious Modbus TCP server can send a response with byte_count=250 (125 registers) regardless of the requested quantity, causing up to 248 bytes of attacker-controlled data to overflow the buffer, potentially allowing remote code execution.

Rincian

Terbit di NVD

8 Mei 2026

Terakhir diubah

17 Juni 2026

Status NVD

Deferred

CVSS 3.1

8.2 (High), sumber CISA ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-121: Stack-based Buffer Overflow

EPSS (30 hari)

0,92% peluang dieksploitasi; lebih tinggi dari 59,3% 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://gist.github.com/dwilliams27/a4e26fe747c8561d608f7549804bd85f
• https://github.com/debevv/nanoMODBUS
• https://github.com/debevv/nanoMODBUS/blob/master/nanomodbus.c#L580-L615