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CVE-2026-10275— OpenSC pkcs11-tool Key Generation pkcs11-tool.c test_kpgen_certwrite buffer overflow

CVSS 5.0 · Medium EPSS 0.30% · P22

Affected Version Matrix 2

VendorProductVersion RangeStatus
n/aOpenSC0.26.0affected
0.26.1affected
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I. Basic Information for CVE-2026-10275

Vulnerability Information
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Vulnerability Title
OpenSC pkcs11-tool Key Generation pkcs11-tool.c test_kpgen_certwrite buffer overflow
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
OpenSC 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenSC是OpenSC开源的一款开源的智能卡工具和中间件。 OpenSC 0.26.1及之前版本存在安全漏洞，该漏洞源于pkcs11-tool Key Generation Module组件中文件src/tools/pkcs11-tool.c的函数test_kpgen_certwrite的错误操作，可能导致缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
-OpenSC 0.26.0 cpe:2.3:a:opensc:opensc:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-10275

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III. Intelligence Information for CVE-2026-10275

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Patches & Fixes for CVE-2026-10275 (2)

Other References for CVE-2026-10275 (2)

Same Patch Batch · n/a · 2026-06-01 · 35 CVEs total

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Showing top 20 of 35 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: OpenSC
Same vendor: n/a
Same weakness: CWE-120

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