{"id":"AZL-81189","summary":"CVE-2025-66037 affecting package opensc for versions less than 0.27.1-1","details":"OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, feeding a crafted input to the fuzz_pkcs15_reader harness causes OpenSC to perform an out-of-bounds heap read in the X.509/SPKI handling path. Specifically, sc_pkcs15_pubkey_from_spki_fields() allocates a zero-length buffer and then reads one byte past the end of that allocation. This issue has been patched in version 0.27.0.","modified":"2026-08-28T17:47:54.939892431Z","published":"2026-03-30T18:16:18Z","upstream":["CVE-2025-66037"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66037"}],"affected":[{"package":{"name":"opensc","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/opensc"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.27.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-81189.json"}}],"schema_version":"1.9.0"}