{"id":"CVE-2026-50144","state":"PUBLISHED","title":"ncnn: Out-of-bounds heap write in ParamDict::load_param via unchecked negative parameter id","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.","publishedAt":"2026-07-15T20:04:07.099Z","updatedAt":"2026-07-17T12:27:10.432Z","severity":{"score":7.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["Tencent ncnn"],"affected":[{"vendor":"Tencent","product":"ncnn","versions":[{"version":"< 5a0288f255daa6c3294f77109f67718e434ec020","status":"affected"},{"version":"<= 20260526","status":"affected"}]}],"references":["https://github.com/Tencent/ncnn/security/advisories/GHSA-jxmc-3mv6-7pwr","https://github.com/Tencent/ncnn/commit/5a0288f255daa6c3294f77109f67718e434ec020"],"weaknesses":["CWE-20","CWE-129","CWE-787"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/50xxx/CVE-2026-50144.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-50144","state":"PUBLISHED","datePublished":"2026-07-15T20:04:07.099Z","dateUpdated":"2026-07-17T12:27:10.432Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-03T18:49:32.275Z"},"containers":{"cna":{"title":"ncnn: Out-of-bounds heap write in ParamDict::load_param via unchecked negative parameter id","descriptions":[{"lang":"en","value":"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":[{"vendor":"Tencent","product":"ncnn","versions":[{"version":"< 5a0288f255daa6c3294f77109f67718e434ec020","status":"affected"},{"version":"<= 20260526","status":"affected"}]}],"references":[{"url":"https://github.com/Tencent/ncnn/security/advisories/GHSA-jxmc-3mv6-7pwr","name":"https://github.com/Tencent/ncnn/security/advisories/GHSA-jxmc-3mv6-7pwr","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/Tencent/ncnn/commit/5a0288f255daa6c3294f77109f67718e434ec020","name":"https://github.com/Tencent/ncnn/commit/5a0288f255daa6c3294f77109f67718e434ec020","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","description":"CWE-20: Improper Input Validation","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-129","lang":"en","description":"CWE-129: Improper Validation of Array Index","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-787","lang":"en","description":"CWE-787: Out-of-bounds Write","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-15T20:04:07.099Z"},"source":{"advisory":"GHSA-jxmc-3mv6-7pwr","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/Tencent/ncnn/security/advisories/GHSA-jxmc-3mv6-7pwr","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-17T12:27:05.477293Z","id":"CVE-2026-50144","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-17T12:27:10.432Z"}}]}}}