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CVE-2019-15946

22
FAUCET Score

CVE-2019-15946 describes an out-of-bounds access vulnerability in OpenSC versions prior to 0.20.0-rc1, specifically within the asn1_decode_entry function in libopensc/asn1.c, affecting various distributions including Debian and Fedora. This medium-severity vulnerability (CVSS 6.4) has a peculiar attack vector of "Physical" and high impact on confidentiality, integrity, and availability, despite a "High" attack complexity. Currently, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, suggesting a low immediate threat.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.19.0CPE matchmatch criteria
cpe:2.3:a:opensc_project:opensc:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
31CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.4MEDIUM

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

Attack Vector
PHYSICAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.5
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 72nd percentile among its peer group of 152 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 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-2019-15946Moderate

opensc: Out-of-bounds access of an ASN.1 Octet string in asn1_decode_entry in libopensc/asn1.c

Sep 6, 2019

References

github.com / OpenSC/OpenSC/commit/a3fc7693f3a035a8a7921cffb98432944bb42740
PatchThird Party Advisory
github.com / OpenSC/OpenSC/compare/f1691fc...12218d4
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2019/09/msg00009.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2021/11/msg00027.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/NDSQLMZZYBHO5X3BK7D6E7E6NZIMZDI5
openwall.com / lists/oss-security/2019/12/29/1
Mailing ListThird Party Advisory