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.
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Fixes
Solution
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Workaround
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References
History
Mon, 30 Mar 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | OpenSC: Out of Bounds vulnerability | |
| Weaknesses | CWE-125 | |
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| Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-03-30T17:01:27.790Z
Reserved: 2025-11-21T01:08:02.615Z
Link: CVE-2025-66037
Vulnrichment
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NVD
Status : Received
Published: 2026-03-30T18:16:18.007
Modified: 2026-03-30T18:16:18.007
Link: CVE-2025-66037
Redhat
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OpenCVE Enrichment
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Weaknesses