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CVE-2025-66037

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d1c6eb6d574bfc73f465fdf238cad25155248498e007e5613899aa66efc710d9
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"OpenSC","vendor":"OpenSC","versions":[{"status":"affected","version":"< 0.27.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e339f31b95e5259841d529fc9e104b7e981e2bf00c340d71cb91465d71ac08df · sha256:82054cf5ffcb5ff3… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"PHYSICAL","availabilityImpact":"LOW","baseScore":3.9,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e339f31b95e5259841d529fc9e104b7e981e2bf00c340d71cb91465d71ac08df · sha256:82054cf5ffcb5ff3… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e339f31b95e5259841d529fc9e104b7e981e2bf00c340d71cb91465d71ac08df · sha256:82054cf5ffcb5ff3… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/OpenSC/OpenSC/security/advisories/GHSA-m58q-rmjm-mmfx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/OpenSC/OpenSC/security/advisories/GHSA-m58q-rmjm-mmfx"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e339f31b95e5259841d529fc9e104b7e981e2bf00c340d71cb91465d71ac08df · sha256:82054cf5ffcb5ff3… · /containers/cna/references/0
{"name":"https://github.com/OpenSC/OpenSC/wiki/CVE-2025-66037","tags":["x_refsource_MISC"],"url":"https://github.com/OpenSC/OpenSC/wiki/CVE-2025-66037"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e339f31b95e5259841d529fc9e104b7e981e2bf00c340d71cb91465d71ac08df · sha256:82054cf5ffcb5ff3… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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