CVE-2025-66215

MEDIUM EPSS 5.5%
Published Mar 30, 20263mo ago · Modified Jun 17, 20261w ago
6.8 CVSS 3.1
Medium
Find Similar
Published Mar 30, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

Description

OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, an attacker with physical access to the computer at the time user or administrator uses a token can cause a stack-buffer-overflow WRITE in card-oberthur. The attack requires crafted USB device or smart card that would present the system with specially crafted responses to the APDUs. This issue has been patched in version 0.27.0.

CVSS Details

Base Score
6.8
Exploitability
0.9
Impact
5.9
Vector string
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Physical
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
5.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-121

Affected Products 1

VendorProductVersionRange
opensc_projectopensc* <0.27.0

References 4

  • github.com https://github.com/OpenSC/OpenSC/commit/efd1d479832141bcf705c2f47655ada4d5f92f5d
    Patch
  • github.com https://github.com/OpenSC/OpenSC/pull/3436
    Issue TrackingPatch
  • github.com https://github.com/OpenSC/OpenSC/security/advisories/GHSA-q5fc-cw56-hwp2
    PatchVendor Advisory
  • github.com https://github.com/OpenSC/OpenSC/wiki/CVE-2025-66215
    Vendor Advisory

Remediation

  • github.com https://github.com/OpenSC/OpenSC/commit/efd1d479832141bcf705c2f47655ada4d5f92f5d
    Patch
  • github.com https://github.com/OpenSC/OpenSC/pull/3436
    Issue TrackingPatch
  • github.com https://github.com/OpenSC/OpenSC/security/advisories/GHSA-q5fc-cw56-hwp2
    PatchVendor Advisory