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 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.

CVSS v4.0

1.3 LOWCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

5.0 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

CVSS v2.0

5.1 MEDIUMAV:N/AC:H/Au:N/C:P/I:P/A:P

EPSS

0.30% chance of exploitation in the next 30 days, 22th percentile

Published

2026-06-01

Proof-of-concept exploits (1)

• https://pan.baidu.com/s/1nrZPKDz2eAcCpsaFiIRlrg

References

• CVE Record
• NVD entry

Related

• CVE-2026-10274
• CVE-2026-10276
• CVE-2026-10273
• CVE-2026-10277
• CVE-2026-10272
• CVE-2026-10278