CVE-2019-20792

Name: CVE-2019-20792
Creator: NVD / NIST
Published: 2020-04-29T04:15:17.17+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.8/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2019-20792 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. OpenSC before 0.20.0 has a double free in coolkey_free_private_data because coolkey_add_object in libopensc/card-coolkey.c lacks a uniqueness check.. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

Description

OpenSC before 0.20.0 has a double free in coolkey_free_private_data because coolkey_add_object in libopensc/card-coolkey.c lacks a uniqueness check.

Metrics

CVSS 3.1

6.8/10

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.70%

48.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-415

Affected Software

Vendor	Product	Versions
Opensc Project	Opensc	< 0.20.0

References

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19208Exploit, Third Party Advisory
https://github.com/OpenSC/OpenSC/commit/c246f6f69a749d4f68626b40795a4f69168008f4Patch, Third Party Advisory
https://github.com/OpenSC/OpenSC/compare/0.19.0...0.20.0Release Notes, Third Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19208Exploit, Third Party Advisory
https://github.com/OpenSC/OpenSC/commit/c246f6f69a749d4f68626b40795a4f69168008f4Patch, Third Party Advisory
https://github.com/OpenSC/OpenSC/compare/0.19.0...0.20.0Release Notes, Third Party Advisory

Timeline

Published: Apr 29, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20792?

OpenSC before 0.20.0 has a double free in coolkey_free_private_data because coolkey_add_object in libopensc/card-coolkey.c lacks a uniqueness check.

How severe is CVE-2019-20792?

CVE-2019-20792 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20792?

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.

Are you affected by CVE-2019-20792?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST