CVE-2025-66037

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.

Risk Information

Base Score

3.9

MODERATE

Vector

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

EPSS Score

Exploitation Probability

0.005

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2025-49010,CVE-2025-66037,CVE-2025-66038,CVE-2025-66215 are affected in OpenSC smartcard framework 0.26.9	Windows

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234