CVE-2026-50144 | ncnn is a high-performance neural network inference framewor… | CVSS 7.1 HIGH

Description

ncnn is a high-performance neural network inference framework optimized for the mobile platform. In commit e54f7b1f88434e1d844ea0551b880a1cfb079ce1 and earlier, ncnn allows an out-of-bounds heap write in ncnn::ParamDict::load_param() when Net::load_param() loads a malicious .param model file because the parsed parameter id is checked only against id >= NCNN_MAX_PARAM_COUNT, allowing a negative id to index before the params[NCNN_MAX_PARAM_COUNT] array. This vulnerability is fixed by commit 5a0288f255daa6c3294f77109f67718e434ec020.

Metadata

CVE ID: CVE-2026-50144
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-03 18:49 UTC
Published: 2026-07-15 20:04 UTC
Last updated: 2026-07-15 20:04 UTC
Primary CWE: CWE-20
CWE-20: Improper Input Validation
Vendor / Product: Tencent / ncnn
Sources: cve.org · NVD

Severity & Metrics

7.1 HIGH CVSS 3.1

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Affected products (1)

Vendor	Product	Platform	Versions
Tencent	ncnn	—	< 5a0288f255daa6c3294f77109f67718e434ec020, <= 20260526

Weakness (CWE)

CWE	Source	Description
CWE-129	cna	CWE-129: Improper Validation of Array Index
CWE-20	cna	CWE-20: Improper Input Validation
CWE-787	cna	CWE-787: Out-of-bounds Write

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.1	HIGH	3.1	cna	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

References (2)

https://github.com/Tencent/ncnn/security/advisories/GHSA-jxmc-3mv6-7pwr https://github.com/Tencent/ncnn/security/advisories/GHSA-jxmc-3mv6-7pwr
https://github.com/Tencent/ncnn/commit/5a0288f255daa6c3294f77109f67718e434ec020 https://github.com/Tencent/ncnn/commit/5a0288f255daa6c3294f77109f67718e434ec020