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CVE-2026-50144— ncnn: Out-of-bounds heap write in ParamDict::load_param via unchecked negative parameter id

CVSS 7.1 · High EPSS 0.11% · P1

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProductVersion RangeStatus
Tencentncnn< 5a0288f255daa6c3294f77109f67718e434ec020affected
<= 20260526affected
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I. Basic Information for CVE-2026-50144

Vulnerability Information
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Vulnerability Title
ncnn: Out-of-bounds heap write in ParamDict::load_param via unchecked negative parameter id
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Tencent ncnn 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tencent ncnn是中国Tencent公司开源的一款高性能神经网络前向计算框架。 Tencent ncnn存在安全漏洞，该漏洞源于ncnn::ParamDict::load_param()函数中参数ID检查不充分，仅检查id >= NCNN_MAX_PARAM_COUNT，导致允许负数ID对params数组进行越界索引，当Net::load_param()加载恶意.param模型文件时可能造成堆越界写入。以下版本受到影响：5a0288f255daa6c3294f77109f67718e434ec02
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Tencentncnn < 5a0288f255daa6c3294f77109f67718e434ec020 -

II. Public POCs for CVE-2026-50144

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 8255 chars
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III. Intelligence Information for CVE-2026-50144

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Patches & Fixes for CVE-2026-50144 (1)

Vendor Advisories for CVE-2026-50144 (1)

IV. Related Vulnerabilities

Same vendor: Tencent
Same weakness: CWE-20

V. Comments for CVE-2026-50144

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