CVE-2021-42778

MEDIUM 5.3CVE-2021-42778 · Published 18/04/2022 · updated 17/06/2026

In short

CVE-2021-42778 is a MEDIUM (CVSS 5.3) vulnerability affecting opensc (opensc project).
Chance of exploitation in the next 30 days (EPSS): 2.1%, higher than 82.0% of all vulnerabilities.
Fix: update to 0.22.0 or later.

Package	Affected versions	Patched versions
opensc opensc_project	`< 0.22.0`	`0.22.0`

A heap double free issue was found in Opensc before version 0.22.0 in sc_pkcs15_free_tokeninfo.

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Package

Affected versions

Patched versions

< 0.22.0

0.22.0

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