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CVE-2025-49010

OpenSC: OpenSC: Stack-buffer-overflow via crafted smart card or USB device responses

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Severity

Low

Red Hat Product Security

3.8

CVSS 3.1

Review impact separately from score.

Published · March 31, 2026

Updated · June 30, 2026

Description

A flaw was found in OpenSC, an open source smart card tools and middleware. An attacker with physical access to the computer, at the time a user or administrator uses a token, can exploit this vulnerability. By presenting specially crafted responses to Application Protocol Data Units (APDUs) from a malicious USB device or smart card, the attacker can cause a stack-buffer-overflow write. This memory corruption vulnerability could lead to unexpected behavior or system instability.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

CVSS 3.1 · 3.8
CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')