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CVE-2026-40510

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

Published: May 29, 2026Updated: May 29, 2026 Sources: CVE List NVD
NVD MITRE
3.8CVSS
LOW

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:PAC:HPR:NUI:RS:UC:LI:LA:L
Exploitability
AV:PAttack Vector
Physical
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low

Weaknesses

CWE-121

Affected Products

OpenSC
OpenSC

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://github.com/OpenSC/OpenSC/pull/3558
github.com
https://github.com/OpenSC/OpenSC/commit/3f24f0b48a481a8cf2e46059d8238a283ddc1c13
github.com
https://www.vulncheck.com/advisories/opensc-stack-buffer-overflow-via-piv-process-history-in-card-piv-c
vulncheck.com

Timeline

Published
May 29, 2026
Last Updated
May 29, 2026

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