CVE-2021-34193

highpriority · track · 30EPSS 0.014 · 72 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.39% (72nd) EPSS

CVSS 7.5 · high

Is it mine?

11 products

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Stack overflow vulnerability in OpenSC smart card middleware before 0.23 via crafted responses to APDUs.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

The CWE weakness classes this flaw belongs to.

Products and version ranges known to be affected.

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2199OpenSC: Schwachstelle ermöglicht Denial of ServiceDeutsch2023-08-28csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in OpenSC ausnutzen, um einen Denial of Service Angriff durchzuführen.

Other names and identifiers for this entity.

Which sources assert this record, and when.

published 2023-08-22modified 2026-06-17

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External citations — patches, advisories, analysis.

scry

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