CVE-2026-40510

1.0 lowEPSS 0.3%

Low (1.0) in opensc project opensc. EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

1.0 low

CVSS:4.0/AV:P/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

CVSS 3.1

6.8 medium

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 22% of CVEs (scores of 2026-10-31)
CWE: CWE-121
Published: 2026-05-29
Modified: 2026-07-21
Record from: the NVD, synced 2026-10-19

Affected

opensc_project:opensc

References

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

Check your stack JSON