Riskcovery

CVE-2026-50144

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

State
Published
Severity
7.1 High
Published
Jul 15, 2026
Updated
Jul 17, 2026
Reserved
Jun 3, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.1 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:HGitHub_M

Weaknesses

  • CWE-20 Improper Input Validation
  • CWE-129 Improper Validation of Array Index
  • CWE-787 Out-of-bounds Write

Affected Products

ProductVersions
ncnnTencent
  • < 5a0288f255daa6c3294f77109f67718e434ec020Affected
  • <= 20260526Affected

References

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