{"id":"CVE-2025-9071","aliases":["EUVD-2025-26195","GHSA-5h27-5x9j-ffpx"],"status":"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.","severity":{"version":"4.0","score":2.3,"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","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00175,"percentile":0.07077,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-780"],"published":"2025-08-29T09:19:59Z","modified":"2026-10-18T21:10:00Z","products":[{"vendor":"oberon microsystems ag","product":"oberon psa crypto"}],"references":[{"url":"https://www.oberon.ch/security-advisories/cve-2025-9071/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-9071"},{"url":"https://www.oberon.ch/security-advisories/cve-2025-9071"},{"url":"https://github.com/advisories/GHSA-5h27-5x9j-ffpx"}],"sources":{"cve":[{"id":"CVE-2025-9071","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.","status":"published","published":"2025-08-29T09:19:59.959Z","modified":"2025-08-29T13:45:42.363Z","cvss":[{"version":"4.0","score":2.3,"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","level":"low","assessor":"cna"}],"cwes":["CWE-780"],"updated_at":"2026-11-02T14:32:33.755525Z"}],"euvd":[{"id":"EUVD-2025-26195","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.","status":"published","published":"2025-08-29T09:19:59Z","modified":"2025-08-29T13:45:42Z","cvss":[{"version":"4.0","score":2.3,"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","level":"low"}],"updated_at":"2026-11-02T20:31:49.600955Z"}],"ghsa":[{"id":"GHSA-5h27-5x9j-ffpx","title":"Erroneously using an all-zero seed for RSA-OEAP padding instead of the generated random bytes, in...","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.","status":"published","published":"2025-08-29T12:31:12Z","modified":"2025-08-29T12:31:23Z","cvss":[{"version":"4.0","score":2.3,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:X/R:X/V:X/RE:L/U:X","level":"low"}],"cwes":["CWE-780"],"updated_at":"2026-11-02T15:03:27.292795Z"}],"nvd":[{"id":"CVE-2025-9071","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.","status":"published","published":"2025-08-29T10:15:33.02Z","modified":"2026-10-18T21:10:00.12Z","cvss":[{"version":"4.0","score":2.3,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:X/R:X/V:X/RE:L/U:X","level":"low","assessor":"secondary"}],"cwes":["CWE-780"],"updated_at":"2026-11-02T14:11:26.200344Z"}]}}