CVE-2025-66037

LOW

3.9

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.

CVE Details

CVSS v3.1 Score3.9

SeverityLOW

CVSS VectorCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack VectorPHYSICAL

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published3/30/2026

Last Modified4/1/2026

Sourcenvd

Honeypot Sightings0

Affected Products

opensc_project:opensc

Weaknesses (CWE)

CWE-125

References

https://github.com/OpenSC/OpenSC/security/advisories/GHSA-m58q-rmjm-mmfx(security-advisories@github.com)

https://github.com/OpenSC/OpenSC/wiki/CVE-2025-66037(security-advisories@github.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.