CVE-2026-10275
CVE-2026-10275 is a medium-severity vulnerability with a CVSS 3.x base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: Medium (CVSS 3.x base score 5.0)
- CVSS v2: 5.1
- CVSS v4: 1.3
- EPSS exploit prediction: 0% (21st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-33680
- Weakness: CWE-119
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2026-10275?
- CVE-2026-10275 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2026-10275 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-10275?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-10275 have an EU (EUVD) identifier?
- Yes. CVE-2026-10275 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33680.
- When was CVE-2026-10275 published?
- CVE-2026-10275 was published on 2026-06-01 and last updated on 2026-06-17.
References
- https://github.com/OpenSC/OpenSC/
- https://github.com/OpenSC/OpenSC/commit/814f745b3b6d100295f65f1935edd33d520d33ab
- https://github.com/OpenSC/OpenSC/issues/3682
- https://github.com/OpenSC/OpenSC/pull/3684
- 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
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