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CVE-2018-16426

18
FAUCET Score

CVE-2018-16426 describes an endless recursion vulnerability in OpenSC versions prior to 0.19.0-rc1, specifically within the iasecc_select_file function when processing responses from IAS-ECC smartcards. This flaw allows an attacker with physical access to a crafted smartcard to trigger a denial-of-service condition, causing programs utilizing the OpenSC library to hang or crash. The vulnerability has a CVSS score of 4.3 (Medium), indicating a low attack complexity requiring physical access and low privileges, with a high impact on availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.18.0CPE matchmatch criteria
cpe:2.3:a:opensc_project:opensc:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
0.7
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.59%
Probability of exploitation in next 30 days
EPSS Percentile
44.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0059 is in the 73rd percentile among its peer group of 170 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.0 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 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: opensc-0:0.19.0-3.el7
View patch

Vendor Advisories (1)

redhatCVE-2018-16426Low

opensc: Infinite recusrion handling responses from IAS-ECC cards in card-iasecc.c:iasecc_select_file()

Sep 12, 2018

References

access.redhat.com / errata/RHSA-2019:2154
github.com / OpenSC/OpenSC/commit/03628449b75a93787eb2359412a3980365dda49b
PatchThird Party Advisory
github.com / OpenSC/OpenSC/releases/tag/0.19.0-rc1
PatchRelease NotesThird Party Advisory
lists.debian.org / debian-lts-announce/2019/09/msg00009.html
x41-dsec.de / lab/advisories/x41-2018-002-OpenSC
ExploitThird Party Advisory