Medium
opensc — security advisory
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.
- Products
- opensc
- Affected versions
- 0.15.0-1ubuntu1, 0.15.0-1ubuntu1+esm1, 0.15.0-1ubuntu1+esm2, 0.15.0-1ubuntu1+esm3, 0.17.0-1, 0.17.0-2, 0.17.0-2build1, 0.17.0-3, 0.17.0-3ubuntu0.1~esm1, 0.17.0-3ubuntu0.1~esm2, 0.17.0-3ubuntu0.1~esm3, 0.19.0-2, 0.20.0-1, 0.20.0-2, 0.20.0-3, 0.20.0-3ubuntu0.1~esm1, 0.20.0-3ubuntu0.1~esm2, 0.20.0-3ubuntu0.1~esm3, 0.20.0-3ubuntu0.1~esm4, 0.21.0-1ubuntu1, 0.22.0-1ubuntu2, 0.22.0-1ubuntu2+esm1, 0.22.0-1ubuntu2.1, 0.22.0-1ubuntu2.1+esm1, 0.23.0-1ubuntu4, 0.24.0~rc1-1, 0.25.0~rc1-1, 0.25.0~rc1-1build1, 0.25.0~rc1-1build2, 0.25.0~rc1-1ubuntu0.1, 0.25.0~rc1-1ubuntu0.1~esm1, 0.25.0~rc1-1ubuntu0.2, 0.25.0~rc1-1ubuntu0.2+esm1, 0.26.1-1, 0.26.1-2, 0.26.1-3, 0.26.1-3ubuntu1, 0.27.0~rc1-1, 0.27.1-2, 0.27.1-2ubuntu1, 0.27.1-2ubuntu2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-10275
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:53 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-10275
opensc
Fixed versions: Not specified
opensc
Fixed versions: Not specified
opensc
Fixed versions: Not specified
opensc
Fixed versions: Not specified
opensc
Fixed versions: Not specified
opensc
Fixed versions: Not specified
opensc
Fixed versions: Not specified
opensc
Fixed versions: Not specified
Complete source record
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"id": "d4e24a4a49b2ca2113fd6f3b70fc4f5fe47d4b13509e472d325a60babf6ee46e",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-10275",
"method": "structured",
"payload": {
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"title": "UBUNTU-CVE-2026-10275",
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],
"modified": "2026-10-17T12:59:46.348526933Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2026-10275",
"https://www.cve.org/CVERecord?id=CVE-2026-10275",
"https://github.com/OpenSC/OpenSC/issues/3682",
"https://github.com/OpenSC/OpenSC/pull/3684",
"https://github.com/OpenSC/OpenSC/commit/814f745b3b6d100295f65f1935edd33d520d33ab",
"https://github.com/OpenSC/OpenSC/",
"https://pan.baidu.com/s/1nrZPKDz2eAcCpsaFiIRlrg",
"https://vuldb.com/cve/CVE-2026-10275",
"https://vuldb.com/submit/825403",
"https://vuldb.com/vuln/367568",
"https://vuldb.com/vuln/367568/cti"
]
},
"related_cves": [
{
"value": "CVE-2026-10275",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 359761,
"published_at": "2026-06-01T17:16:00+00:00"
}