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CVE-2026-50144

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

Published: Jul 15, 2026Updated: Jul 17, 2026 Sources: CVE List NVDCWE-20
7.1HIGH
NVD MITRE
EPSS Score
0.1%
Top 98.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:RS:UC:NI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-20CWE-129CWE-787

Affected Products

Tencent
commercial·CNaka tencent hunyuan, tencent wechat
ncnnMixed
Communications / messaging-chat

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

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

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