CVE-2026-51536

Katalog CVE

CVSS 9.1 · Critical EPSS 0,63%

Kerentanan Integer Overflow or Wraparound pada opener project opener. Skor CVSS 3.1 9.1 (Critical) menurut CISA ADP.

Deskripsi (NVD)

In OpENer 2.3.0 (commit 76b95cf) when parsing incoming CIP (Common Industrial Protocol) network packets, the length parameter is inconsistently typed across the call stack. Specifically, an upstream length calculated as an int is passed to a downstream function that expects an EipInt16 (a 16-bit signed integer). If a maliciously crafted packet with specific length fields is processed, the length parameter can overflow or be truncated into a negative value. This negative length bypasses subsequent bounds checking (due to signed/unsigned comparison issues) and is ultimately used in memory operations, leading to a Stack Buffer Overflow when reading data in DecodePaddedEPath.

Rincian

Terbit di NVD

13 Juli 2026

Terakhir diubah

11 Agustus 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-190: Integer Overflow or Wraparound

EPSS (30 hari)

0,63% peluang dieksploitasi; lebih tinggi dari 48,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/EIPStackGroup/OpENer/issues/563 exploit · issue tracking · advisory vendor
• https://gist.github.com/MrAlaskan/e160c626a32e03e5d9eddaa732560672 advisory pihak ketiga