CVE-2026-10275
Medium
Description
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 possible to be carried out remotely. The complexity of an attack is rather high. It is indicated that the exploitability is difficult. The exploit has been published and may be used. Patch name: 814f745b3b6d100295f65f1935edd33d520d33ab. It is recommended to apply a patch to fix this issue.
SeverityMedium
CVSS5.0
Exploit probability—
ProductOpensc
PublishedJun 1, 2026
First seenJun 1, 2026
Weakness typeCWE-120CWE-120CWE-119Memory buffer bounds error
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| opensc opensc | 0.26.0, 0.26.1 | — |
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