Low severity3.8NVD Advisory· Published May 29, 2026· Updated Jun 3, 2026

CVE-2026-40510

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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Opensc Project/libopenscreferences
Opensc Project/Opensc
cpe:2.3:a:opensc_project:opensc:*:*:*:*:*:*:*:*
Range: <0.27.0
Openscad/openscadllm-fuzzy
Range: <0.27.0-rc1

Patches

Vulnerability mechanics

References

github.com/OpenSC/OpenSC/commit/3f24f0b48a481a8cf2e46059d8238a283ddc1c13nvdPatch
github.com/OpenSC/OpenSC/pull/3558nvdIssue TrackingPatch
www.vulncheck.com/advisories/opensc-stack-buffer-overflow-via-piv-process-history-in-card-piv-cnvdThird Party Advisory

News mentions

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cvss	0.247
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000