CVE-2021-34193
HIGHCVSS 7.5/10EPSS 1.14%
Last modified
CVE-2021-34193 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Stack overflow vulnerability in OpenSC smart card middleware before 0.23 via crafted responses to APDUs.. EPSS estimates a 1.14% chance of exploitation in the next 30 days.
Description
Stack overflow vulnerability in OpenSC smart card middleware before 0.23 via crafted responses to APDUs.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Opensc Project | Opensc | < 0.22.0 |
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27719Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28185Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28383Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28768Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28843Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28855Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29912Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30112Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30800Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31448Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31540Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32149Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27719Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28185Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28383Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28768Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28843Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28855Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29912Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30112Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30800Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31448Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31540Issue Tracking, Mailing List
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32149Issue Tracking, Mailing List
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-34193?
Stack overflow vulnerability in OpenSC smart card middleware before 0.23 via crafted responses to APDUs.
How severe is CVE-2021-34193?
CVE-2021-34193 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.14% probability of exploitation in the next 30 days.
How do I fix CVE-2021-34193?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-34193?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST