CVE-2019-19481

Name: CVE-2019-19481
Creator: NVD / NIST
Published: 2019-12-01T23:15:10.807+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.6/10EPSS 0.25%

Last modified Jun 17, 2026

CVE-2019-19481 is a medium-severity vulnerability rated 4.6/10 on the CVSS scale. An issue was discovered in OpenSC through 0.19.0 and 0.20.x through 0.20.0-rc3. libopensc/card-cac1.c mishandles buffer limits for CAC certificates.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

Description

An issue was discovered in OpenSC through 0.19.0 and 0.20.x through 0.20.0-rc3. libopensc/card-cac1.c mishandles buffer limits for CAC certificates.

Metrics

CVSS 3.1

4.6/10

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

EPSS Probability

0.25%

15.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions	Update
Opensc Project	Opensc	0.19.0	—
Opensc Project	Opensc	0.20.0	Rc1

References

http://www.openwall.com/lists/oss-security/2019/12/29/1Mailing List
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18618Permissions Required, Third Party Advisory
https://github.com/OpenSC/OpenSC/commit/b75c002cfb1fd61cd20ec938ff4937d7b1a94278Patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NDSQLMZZYBHO5X3BK7D6E7E6NZIMZDI5/
http://www.openwall.com/lists/oss-security/2019/12/29/1Mailing List
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18618Permissions Required, Third Party Advisory
https://github.com/OpenSC/OpenSC/commit/b75c002cfb1fd61cd20ec938ff4937d7b1a94278Patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NDSQLMZZYBHO5X3BK7D6E7E6NZIMZDI5/

Timeline

Published: Dec 1, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-19481?

An issue was discovered in OpenSC through 0.19.0 and 0.20.x through 0.20.0-rc3. libopensc/card-cac1.c mishandles buffer limits for CAC certificates.

How severe is CVE-2019-19481?

CVE-2019-19481 has a CVSS score of 4.6/10 (MEDIUM severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.

How do I fix CVE-2019-19481?

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-2019-19481?

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

Scan your code now

Source: NVD / NIST