CVE-2021-42778
Medium
Published: 18 April 2022
Published
18 April 2022
Modified
03 November 2025
KEV Added
—
Patch
—
CVSS Score v3.1
5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS Score
0.0013
32.0th percentile
Risk Priority
11
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-42778 is a medium-severity Operation on a Resource after Expiration or Release (CWE-672) vulnerability in Redhat Enterprise Linux. Its CVSS base score is 5.3 (Medium).
Operationally, ranked at the 32.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-29734
Vulnerability details
A heap double free issue was found in Opensc before version 0.22.0 in sc_pkcs15_free_tokeninfo.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
opensc project
opensc
≤ 0.22.0
fedoraproject
fedora
33
redhat
enterprise linux
7.0, 8.0
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.