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.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Silicon Labs | Silicon Labs Matter Github | unaffected |
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History
Thu, 23 Jul 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Weak entropy initialization in Silicon Labs Matter SiWx917 TinyCrypt path | |
| Weaknesses | CWE-336 | |
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| Metrics |
cvssV4_0
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Projects
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MITRE
Status: PUBLISHED
Assigner: Silabs
Published:
Updated: 2026-07-23T21:05:22.113Z
Reserved: 2026-04-23T17:11:02.116Z
Link: CVE-2026-6924
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