CVE-2026-40510
Low
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.
SeverityLow
CVSS3.8
Exploit probability—
ProductOpensc
PublishedMay 29, 2026
First seenMay 29, 2026
Weakness typeCWE-121CWE-121
How to fix
Update
- opensc_project opensc0.27.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| opensc_project opensc | v < 0.27.0 | 0.27.0 |
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