{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-4930","assignerOrgId":"030b2754-1501-44a4-bef8-48be86a33bf4","state":"PUBLISHED","assignerShortName":"Silabs","dateReserved":"2026-03-26T19:20:56.943Z","datePublished":"2026-06-25T18:39:26.379Z","dateUpdated":"2026-06-25T19:03:41.047Z"},"containers":{"cna":{"providerMetadata":{"orgId":"030b2754-1501-44a4-bef8-48be86a33bf4","shortName":"Silabs","dateUpdated":"2026-06-25T18:39:26.379Z"},"title":"DPA Countermeasures weakening on Series 3 devices","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-331","description":"CWE-331 Insufficient entropy","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-97","descriptions":[{"lang":"en","value":"CAPEC-97 Cryptanalysis"}]}],"affected":[{"vendor":"silabs.com","product":"Simplicity SDK","packageName":"SiSDK","versions":[{"status":"affected","version":"0","lessThanOrEqual":"*.*","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"SYMCRYPTO is the SiXG301's host side hardware engine accessed by PSA crypto library that accelerates symmetric cryptographic operations (AES encryption/decryption and hashing).\n\n\nDPA Countermeasures on SYMCRYPTO can be weakened (reduced entropy) by forcing certain seed values if an attacker gains code execution capability on the impacted device.\n\n  *  Therefore, the keys loaded on SYMCRYPTO may be more vulnerable to extraction through DPA attacks than intended","supportingMedia":[{"type":"text/html","base64":false,"value":"SYMCRYPTO is the SiXG301's host side hardware engine accessed by PSA crypto library that accelerates symmetric cryptographic operations (AES encryption/decryption and hashing).\n<br><br><div>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.\n<br><ul><li>Therefore, the keys loaded on SYMCRYPTO may be more vulnerable to extraction through DPA attacks than intended</li></ul></div>"}]}],"references":[{"url":"https://community.silabs.com/068Vm00000sjHs3","tags":["third-party-advisory","permissions-required"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"PHYSICAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","subIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"HIGH","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"HIGH","baseScore":7.1,"vectorString":"CVSS:4.0/AV:P/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H"}}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-25T19:03:07.263017Z","id":"CVE-2026-4930","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-25T19:03:41.047Z"}}]}}