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CVE-2026-40528

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CVE-2026-40528

Published: May 29, 2026

Modified: May 29, 2026

PUBLISHED

CVSS v3.1

3.8

LOW

Description

OpenSC before 0.27.0, fixed in commit 0358817, contains a stack and heap buffer overrun vulnerability in the do_key_value() function in src/pkcs15init/profile.c that allows attackers to corrupt memory by supplying a crafted profile configuration file. During pkcs15-init invocation, a key value entry beginning with '=' followed by more than sizeof(keybuf) characters is copied into keybuf via memcpy without a length check, causing both stack and heap buffer overruns.

VendorProductVersions

OpenSC

OpenSC

affected
0 - < 0.27.0
affected
0 - < 0358817ec74aeca654f83e7709c7720b14c5db59

Weaknesses (CWE)

CWE-121
CWE-122

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Physical

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

References

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