{"id":"CVE-2026-28390","summary":"Possible NULL Dereference When Processing CMS KeyTransportRecipientInfo","details":"Issue summary: During processing of a crafted CMS EnvelopedData message\nwith KeyTransportRecipientInfo a NULL pointer dereference can happen.\n\nImpact summary: Applications that process attacker-controlled CMS data may\ncrash before authentication or cryptographic operations occur resulting in\nDenial of Service.\n\nWhen a CMS EnvelopedData message that uses KeyTransportRecipientInfo with\nRSA-OAEP encryption is processed, the optional parameters field of\nRSA-OAEP SourceFunc algorithm identifier is examined without checking\nfor its presence. This results in a NULL pointer dereference if the field\nis missing.\n\nApplications and services that call CMS_decrypt() on untrusted input\n(e.g., S/MIME processing or CMS-based protocols) are vulnerable.\n\nThe FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this\nissue, as the affected code is outside the OpenSSL FIPS module boundary.","modified":"2026-07-27T09:24:10.864196Z","published":"2026-04-07T22:00:54.172Z","related":["ALSA-2026:22312","ALSA-2026:22313","ALSA-2026:22314","ALSA-2026:22315","ALSA-2026:38503","CGA-4pv4-h7wx-59f2","SUSE-SU-2026:1375-1","SUSE-SU-2026:1386-1","SUSE-SU-2026:1429-1","SUSE-SU-2026:1549-1","SUSE-SU-2026:1550-1","SUSE-SU-2026:1562-1","SUSE-SU-2026:1577-1","SUSE-SU-2026:1605-1","SUSE-SU-2026:1711-1","SUSE-SU-2026:21107-1","SUSE-SU-2026:21186-1","SUSE-SU-2026:21244-1","SUSE-SU-2026:22132-1","openSUSE-SU-2026:10533-1","openSUSE-SU-2026:20525-1"],"database_specific":{"cna_assigner":"openssl","cwe_ids":["CWE-476"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28390.json"},"references":[{"type":"WEB","url":"https://cert-portal.siemens.com/productcert/html/ssa-032379.html"},{"type":"WEB","url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28390.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28390"},{"type":"ADVISORY","url":"https://openssl-library.org/news/secadv/20260407.txt"},{"type":"FIX","url":"https://github.com/openssl/openssl/commit/01194a8f1941115cd0383bfa91c736dd3993c8bc"},{"type":"FIX","url":"https://github.com/openssl/openssl/commit/2e39b7a6993be445fddb9fbce316fa756e0397b6"},{"type":"FIX","url":"https://github.com/openssl/openssl/commit/af2a5fecd3e71a29e7568f9c1453dec5cebbaff4"},{"type":"FIX","url":"https://github.com/openssl/openssl/commit/ea7b4ea4f9f853521ba34830cbcadc970d2e0788"},{"type":"FIX","url":"https://github.com/openssl/openssl/commit/fd2f1a6cf53b9ceeca723a001aa4b825d7c7ee75"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/openssl/openssl","events":[{"introduced":"e818b74be2170fbe957a07b0da4401c2b694b3b8"},{"fixed":"e818b74be2170fbe957a07b0da4401c2b694b3b8"},{"introduced":"e04bd3433fd84e1861bf258ea37928d9845e6a86"},{"fixed":"e04bd3433fd84e1861bf258ea37928d9845e6a86"},{"introduced":"89cd17a031e022211684eb7eb41190cf1910f9fa"},{"fixed":"5aada9c299a3b28fc82348f4e2b93805fa0a0e9c"},{"introduced":"4cb31128b5790819dfeea2739fbde265f71a10a2"},{"fixed":"204165c1550d3aa0f49395af654124cec2bbabf9"},{"introduced":"98acb6b02839c609ef5b837794e08d906d965335"},{"fixed":"03b8620d6e9b7b4d5701865edb6ad86101fe5517"},{"introduced":"636dfadc70ce26f2473870570bfd9ec352806b1d"},{"fixed":"286ddeaac037533bbdce65b3c689e3f7ffebf0f6"},{"introduced":"7b371d80d959ec9ab4139d09d78e83c090de9779"},{"fixed":"fe686e15d84334b284f883118ed92f64b409b3aa"},{"fixed":"01194a8f1941115cd0383bfa91c736dd3993c8bc"},{"fixed":"2e39b7a6993be445fddb9fbce316fa756e0397b6"},{"fixed":"af2a5fecd3e71a29e7568f9c1453dec5cebbaff4"},{"fixed":"ea7b4ea4f9f853521ba34830cbcadc970d2e0788"},{"fixed":"fd2f1a6cf53b9ceeca723a001aa4b825d7c7ee75"}],"database_specific":{"cpe":"cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"1.0.2"},{"fixed":"1.0.2zp"},{"introduced":"1.1.1"},{"fixed":"1.1.1zg"},{"introduced":"3.0.0"},{"fixed":"3.0.20"},{"introduced":"3.3.0"},{"fixed":"3.3.7"},{"introduced":"3.4.0"},{"fixed":"3.4.5"},{"introduced":"3.5.0"},{"fixed":"3.5.6"},{"introduced":"3.6.0"},{"fixed":"3.6.2"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["openssl-3.0.19","openssl-3.3.6","openssl-3.4.4","openssl-3.5.5","openssl-3.6.1","3.4-POST-CLANG-FORMAT-WEBKIT","3.0-POST-CLANG-FORMAT-WEBKIT","3.4-PRE-CLANG-FORMAT-WEBKIT","3.3-POST-CLANG-FORMAT-WEBKIT","3.5-POST-CLANG-FORMAT-WEBKIT","3.0-PRE-CLANG-FORMAT-WEBKIT","3.3-PRE-CLANG-FORMAT-WEBKIT","3.5-PRE-CLANG-FORMAT-WEBKIT","3.6-POST-CLANG-FORMAT-WEBKIT","3.6-PRE-CLANG-FORMAT-WEBKIT","openssl-3.6.0","openssl-3.0.18","openssl-3.3.5","openssl-3.4.3","openssl-3.5.4","openssl-3.5.3","openssl-3.5.2","openssl-3.0.17","openssl-3.3.4","openssl-3.4.2","openssl-3.5.1","openssl-3.5.0","openssl-3.0.16","openssl-3.3.3","openssl-3.4.1","openssl-3.4.0","openssl-3.0.15","openssl-3.3.2","openssl-3.0.14","openssl-3.3.1","openssl-3.3.0","openssl-3.0.13","openssl-3.0.12","openssl-3.0.11","openssl-3.0.10","openssl-3.0.9","openssl-3.0.8","openssl-3.0.7","openssl-3.0.6","openssl-3.0.5","openssl-3.0.4","openssl-3.0.3","openssl-3.0.2","openssl-3.0.1","openssl-3.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28390.json","vanir_signatures_modified":"2026-07-27T09:24:10Z","vanir_signatures":[{"source":"https://github.com/openssl/openssl/commit/ea7b4ea4f9f853521ba34830cbcadc970d2e0788","target":{"function":"rsa_cms_decrypt","file":"crypto/cms/cms_rsa.c"},"deprecated":false,"digest":{"function_hash":"208167205929557218772622546317945340200","length":1555},"id":"CVE-2026-28390-53fef48e","signature_type":"Function","signature_version":"v1"},{"deprecated":false,"digest":{"function_hash":"208167205929557218772622546317945340200","length":1555},"id":"CVE-2026-28390-65f665fd","signature_type":"Function","signature_version":"v1","source":"https://github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