---
id: CVE-2026-112073
title: Tencent ncnn MatMul matmul.cpp matmul_transb out-of-bounds
summary: >-
  A vulnerability was identified in Tencent ncnn up to
  44b02dabdcf97499281a4692ebd65bad73dcf8b6. Affected by this vulnerability is
  the function matmul_transb of the file src/layer/matmul.cpp of the component
  MatMul. The manipulation leads …
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C'
cvssSource: cna
cwe:
  - CWE-125
  - CWE-119
vendor: Tencent
product: ncnn
affected:
  - ncnn 44b02dabdcf97499281a4692ebd65bad73dcf8b6
published: '2026-10-19'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T03:15:18.986Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112073'
references:
  - url: 'https://vuldb.com/vuln/421752'
    label: VDB-421752 | Tencent ncnn MatMul matmul.cpp matmul_transb out-of-bounds
  - url: 'https://vuldb.com/vuln/421752/cti'
    label: 'VDB-421752 | CTI Indicators (IOB, IOC, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-112073'
    label: CVE-2026-112073 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/1009476'
    label: 'Submit #1009476 | Tencent ncnn master 3b7bdba Out-of-Bounds Read'
  - url: 'https://github.com/Tencent/ncnn/issues/7034'
  - url: 'https://github.com/Tencent/ncnn/'
tags:
  - cve.org
ingestedAt: '2026-10-19T04:02:15.998Z'
---

## Overview

A vulnerability was identified in Tencent ncnn up to 44b02dabdcf97499281a4692ebd65bad73dcf8b6. Affected by this vulnerability is the function matmul_transb of the file src/layer/matmul.cpp of the component MatMul. The manipulation leads to out-of-bounds read. The attack can be initiated remotely. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.

## Affected

- `ncnn 44b02dabdcf97499281a4692ebd65bad73dcf8b6`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.