{"id":"CVE-2025-9071","state":"PUBLISHED","title":"Insecure RSA-OAEP implementation with all-zero seed for padding in Oberon PSA Crypto","description":"Erroneously using an all-zero seed for RSA-OEAP padding instead of the generated random bytes, in Oberon microsystems AG’s Oberon PSA Crypto library in all versions up to 1.5.1, results in deterministic RSA and thus in a loss of confidentiality for guessable messages, recognition of repeated messages, and loss of security proofs.","publishedAt":"2025-08-29T09:19:59.959Z","updatedAt":"2025-08-29T13:45:42.363Z","severity":{"score":2.3,"label":"Low","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/S:N/RE:L","source":"NCSC.ch"},"assigner":"NCSC.ch","products":["Oberon microsystems AG Oberon PSA Crypto"],"affected":[{"vendor":"Oberon microsystems AG","product":"Oberon PSA Crypto","defaultStatus":"unaffected","versions":[{"version":"1.0.0","status":"affected","lessThanOrEqual":"1.5.1","changes":[{"at":"rsa_oaep_padding.patch","status":"unaffected"}],"versionType":"custom"}]}],"references":["https://www.oberon.ch/security-advisories/cve-2025-9071/"],"weaknesses":["CWE-780"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/9xxx/CVE-2025-9071.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-9071","state":"PUBLISHED","datePublished":"2025-08-29T09:19:59.959Z","dateUpdated":"2025-08-29T13:45:42.363Z","assignerShortName":"NCSC.ch","assignerOrgId":"455daabc-a392-441d-aa46-37d35189897c","dateReserved":"2025-08-15T14:58:36.635Z"},"containers":{"cna":{"title":"Insecure RSA-OAEP implementation with all-zero seed for padding in Oberon PSA Crypto","descriptions":[{"lang":"en","value":"Erroneously using an all-zero seed for RSA-OEAP padding instead of the generated random bytes, in Oberon microsystems AG’s Oberon PSA Crypto library in all versions up to 1.5.1, results in deterministic RSA and thus in a loss of confidentiality for guessable messages, recognition of repeated messages, and loss of security proofs."}],"affected":[{"vendor":"Oberon microsystems AG","product":"Oberon PSA Crypto","defaultStatus":"unaffected","versions":[{"version":"1.0.0","status":"affected","lessThanOrEqual":"1.5.1","changes":[{"at":"rsa_oaep_padding.patch","status":"unaffected"}],"versionType":"custom"}]}],"references":[{"url":"https://www.oberon.ch/security-advisories/cve-2025-9071/"}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NEGLIGIBLE","attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":2.3,"baseSeverity":"LOW","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/S:N/RE:L","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"LOW"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-780","description":"CWE-780 Use of RSA Algorithm without OEAP","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"NCSC.ch","orgId":"455daabc-a392-441d-aa46-37d35189897c","dateUpdated":"2025-08-29T09:19:59.959Z"},"credits":[{"lang":"en","type":"finder","value":"Nordic Semiconductor ASA"}],"impacts":[{"capecId":"CAPEC-97","descriptions":[{"lang":"en","value":"CAPEC-97 Cryptanalysis"}]}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-08-29T13:45:26.977528Z","id":"CVE-2025-9071","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":"2025-08-29T13:45:42.363Z"}}]}}}