VULNERABILITY INTELLIGENCE

CVE-2026-40510

CVSS score3.8 LOW
EPSS probability0.29%
CISA KEVNot currently listed
Published2026-05-29
Last modified2026-07-21
CVSS vectorCVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

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.

Weakness classification

  • disclosure@vulncheck.com: CWE-121

Primary references