Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2019-19481

18
FAUCET Score

CVE-2019-19481 is a buffer limit mishandling vulnerability in OpenSC versions through 0.19.0 and 0.20.x through 0.20.0-rc3, specifically affecting how CAC certificates are processed in libopensc/card-cac1.c. This vulnerability has a CVSS score of 4.6 (Medium), indicating a physical attack vector with low complexity, requiring no user interaction, and potentially leading to high availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
0.19.0CPE matchmatch criteria
cpe:2.3:a:opensc_project:opensc:0.19.0:-:*:*:*:*:*:*
0.20.0CPE matchmatch criteria
cpe:2.3:a:opensc_project:opensc:0.20.0:rc1:*:*:*:*:*:*
0.20.0CPE matchmatch criteria
cpe:2.3:a:opensc_project:opensc:0.20.0:rc2:*:*:*:*:*:*
0.20.0CPE matchmatch criteria
cpe:2.3:a:opensc_project:opensc:0.20.0:rc3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.6MEDIUM

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

Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
0.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.25%
Probability of exploitation in next 30 days
EPSS Percentile
16.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0025 is in the 32nd percentile among its peer group of 1,532 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: opensc-0:0.20.0-2.el8
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: opensc

Vendor Advisories (1)

redhatCVE-2019-19481Moderate

opensc: Improper handling of buffer limits for CAC certificates

Oct 30, 2019

References

bugs.chromium.org / p/oss-fuzz/issues/detail
Permissions RequiredThird Party Advisory
github.com / OpenSC/OpenSC/commit/b75c002cfb1fd61cd20ec938ff4937d7b1a94278
Patch
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/NDSQLMZZYBHO5X3BK7D6E7E6NZIMZDI5
openwall.com / lists/oss-security/2019/12/29/1
Mailing List