CVE-2026-40510

LOW

OpenSC < 0.27.0-rc1 Stack Buffer Overflow via piv_process_history() in card-piv.c

Title source: cna
STIX 2.1

Description

OpenSC before 0.27.0-rc1, fixed in commit 3f24f0b, contains a stack buffer overflow vulnerability in piv_process_history() in src/libopensc/card-piv.c that allows physically present attackers to trigger memory corruption by presenting a crafted PIV smart card or USB device returning a URL field longer than 118 bytes in the Key History Object ASN.1 response.

References (3)

Core 3

Scores

CVSS v3 3.8
EPSS 0.0021
EPSS Percentile 11.3%
Attack Vector PHYSICAL
CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-121
Status published
Products (3)
OpenSC/OpenSC < 0.27.0-rc1
OpenSC/OpenSC < 3f24f0b48a481a8cf2e46059d8238a283ddc1c13
opensc_project/opensc < 0.27.0
Published May 29, 2026
Tracked Since May 29, 2026