What is CVE-2026-10275?

CVE-2026-10275 is a medium-severity vulnerability in Opensc, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.0/10. Published 2026-06-01.

How severe is CVE-2026-10275?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Buffer overflow in Opensc

CVE-2026-10275

A flaw has been found in OpenSC up to 0.26.1. This affects the function test_kpgen_certwrite of the file src/tools/pkcs11-tool.c of the component pkcs11-tool Key Generation Module. This manipulation causes buffer overflow. The attack is po…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (20.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L.

Affected products

N/a Opensc — versions 0.26.0, 0.26.1

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (issue-tracking)
cna@vuldb.com (issue-tracking, patch)
cna@vuldb.com (exploit)
cna@vuldb.com (patch)
cna@vuldb.com (product)

Frequently asked questions

What is CVE-2026-10275?: CVE-2026-10275 is a medium-severity vulnerability in Opensc, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.0/10. Published 2026-06-01.
How severe is CVE-2026-10275?: Medium severity. CVSS v3 base score is 5.0 out of 10.