{"id":"CVE-2026-4930","state":"PUBLISHED","title":"DPA Countermeasures weakening on Series 3 devices","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).\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","publishedAt":"2026-06-25T18:39:26.379Z","updatedAt":"2026-06-25T19:03:41.047Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"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":"Silabs"},"assigner":"Silabs","products":["silabs.com Simplicity SDK"],"affected":[{"vendor":"silabs.com","product":"Simplicity SDK","packageName":"SiSDK","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"*.*","versionType":"semver"}]}],"references":["https://community.silabs.com/068Vm00000sjHs3"],"weaknesses":["CWE-331"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/4xxx/CVE-2026-4930.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-4930","state":"PUBLISHED","datePublished":"2026-06-25T18:39:26.379Z","dateUpdated":"2026-06-25T19:03:41.047Z","assignerShortName":"Silabs","assignerOrgId":"030b2754-1501-44a4-bef8-48be86a33bf4","dateReserved":"2026-03-26T19:20:56.943Z"},"containers":{"cna":{"title":"DPA Countermeasures weakening on Series 3 devices","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"}],"affected":[{"vendor":"silabs.com","product":"Simplicity SDK","packageName":"SiSDK","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"*.*","versionType":"semver"}]}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-331","lang":"en","description":"CWE-331 Insufficient entropy","type":"CWE"}]}],"providerMetadata":{"shortName":"Silabs","orgId":"030b2754-1501-44a4-bef8-48be86a33bf4","dateUpdated":"2026-06-25T18:39:26.379Z"},"impacts":[{"capecId":"CAPEC-97","descriptions":[{"lang":"en","value":"CAPEC-97 Cryptanalysis"}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"title":"CISA ADP Vulnrichment","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"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-25T19:03:41.047Z"}}]}}}