CVE-2026-4930: CWE-331 Insufficient entropy in silabs.com Simplicity SDK
SYMCRYPTO is the SiXG301's host side hardware engine accessed by PSA crypto library that accelerates symmetric cryptographic operations (AES encryption/decryption and hashing). DPA Countermeasures on SYMCRYPTO can be weakened (reduced entropy) by forcing certain seed values if an attacker gains code execution capability on the impacted device. * Therefore, the keys loaded on SYMCRYPTO may be more vulnerable to extraction through DPA attacks than intended
AI Analysis
Technical Summary
The vulnerability CVE-2026-4930 concerns the SYMCRYPTO hardware engine in the SiXG301 device accessed through the PSA crypto library within silabs.com's Simplicity SDK. The DPA countermeasures designed to protect cryptographic keys rely on entropy from seed values. If an attacker obtains code execution privileges on the affected device, they can force certain seed values, thereby reducing entropy and weakening these countermeasures. This increases the risk that keys loaded into SYMCRYPTO could be extracted through DPA attacks more easily than intended.
Potential Impact
An attacker with code execution capability on the affected device can reduce the entropy of the DPA countermeasures, making cryptographic keys more vulnerable to extraction via differential power analysis. This compromises the confidentiality of keys used in AES encryption/decryption and hashing operations accelerated by SYMCRYPTO.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented at this time.
CVE-2026-4930: CWE-331 Insufficient entropy in silabs.com Simplicity SDK
Description
SYMCRYPTO is the SiXG301's host side hardware engine accessed by PSA crypto library that accelerates symmetric cryptographic operations (AES encryption/decryption and hashing). DPA Countermeasures on SYMCRYPTO can be weakened (reduced entropy) by forcing certain seed values if an attacker gains code execution capability on the impacted device. * Therefore, the keys loaded on SYMCRYPTO may be more vulnerable to extraction through DPA attacks than intended
CVSS v4.0
Score 7.1high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-4930 concerns the SYMCRYPTO hardware engine in the SiXG301 device accessed through the PSA crypto library within silabs.com's Simplicity SDK. The DPA countermeasures designed to protect cryptographic keys rely on entropy from seed values. If an attacker obtains code execution privileges on the affected device, they can force certain seed values, thereby reducing entropy and weakening these countermeasures. This increases the risk that keys loaded into SYMCRYPTO could be extracted through DPA attacks more easily than intended.
Potential Impact
An attacker with code execution capability on the affected device can reduce the entropy of the DPA countermeasures, making cryptographic keys more vulnerable to extraction via differential power analysis. This compromises the confidentiality of keys used in AES encryption/decryption and hashing operations accelerated by SYMCRYPTO.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Silabs
- Date Reserved
- 2026-03-26T19:20:56.943Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3d7af74853345fc155f0ea
Added to database: 06/25/2026, 19:01:11 UTC
Last enriched: 06/25/2026, 19:15:54 UTC
Last updated: 06/25/2026, 20:13:15 UTC
Views: 3
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