CVE-2021-42780
MEDIUMCVSS 5.3/10EPSS 2.03%
Last modified
CVE-2021-42780 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A use after return issue was found in Opensc before version 0.22.0 in insert_pin function that could potentially crash programs using the library.. EPSS estimates a 2.03% chance of exploitation in the next 30 days.
Description
A use after return issue was found in Opensc before version 0.22.0 in insert_pin function that could potentially crash programs using the library.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Opensc Project | Opensc | < 0.22.0 |
| Fedoraproject | Fedora | 33 |
| Redhat | Enterprise Linux | 7.0 |
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28383Issue Tracking, Mailing List, Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2016139Issue Tracking, Patch, Third Party Advisory
- https://github.com/OpenSC/OpenSC/commit/5df913b7Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202209-03Third Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28383Issue Tracking, Mailing List, Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2016139Issue Tracking, Patch, Third Party Advisory
- https://github.com/OpenSC/OpenSC/commit/5df913b7Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202209-03Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-42780?
A use after return issue was found in Opensc before version 0.22.0 in insert_pin function that could potentially crash programs using the library.
How severe is CVE-2021-42780?
CVE-2021-42780 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 2.03% probability of exploitation in the next 30 days.
How do I fix CVE-2021-42780?
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-2021-42780?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST