CVE-2026-50144: Tencent Ncnn

High severity, CVSS 7.1. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Tencent Ncnn: before 5a0288f255daa6c3294f77109f67718e434ec020 (fixed in 5a0288f255daa6c3294f77109f67718e434ec020); up to and including 20260526

Published 2026-07-15. Last modified 2026-07-17.