{"id":"CVE-2026-6924","summary":"Weak entropy initialization in Silicon Labs Matter SiWx917 TinyCrypt path","details":"A bug in the entropy initialization for SiWx917 causes the DRBG to use a predictable seed. As such, all random numbers generated in the Matter code use the same stream of numbers. This vulnerability was discovered after the impacted repository was already deprecated.","modified":"2026-10-08T02:51:38.464925192Z","published":"2026-07-23T21:05:22.113Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6924.json","cna_assigner":"Silabs","cwe_ids":["CWE-336"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6924.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6924"},{"type":"REPORT","url":"https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/a45Vm0000009SzZIAU?operationContext=S1"},{"type":"FIX","url":"https://github.com/SiliconLabs/matter/tree/release_2.3.1-1.3"},{"type":"PACKAGE","url":"https://github.com/SiliconLabs/simplicity_sdk"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/siliconlabs/simplicity_sdk","events":[{"introduced":"0"},{"last_affected":"0"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0"},{"last_affected":"0"}]}}],"versions":["0","v2024.6.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6924.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}]}