CVEvulnerability

CVE-2026-71263

9.1 CRITICAL Published 2026-08-05 Modified 2026-10-24 Official page ↗
Status
Deferred
Published
2026-08-05
Last modified
2026-10-24
Assigner
309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
CVSS 3.1 (309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c)
9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Weaknesses
CWE-787

Description

The LINUXTCP port of FreeModbus contains an off-by-one bounds check in xMBPortTCPPool (demo/LINUXTCP/port/porttcp.c). The check uses a strict greater-than comparison instead of greater-than-or-equal against the 263-byte MB_TCP_BUF_SIZE limit.

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References