6.8

CVE-2019-20792: opensc_project opensc Double Free

CVSS: 6.8v3.1MediumModified
AliasesUBUNTU-CVE-2019-20792DEBIAN-CVE-2019-20792openSUSE-SU-2024:11643-1
Published 29-04-2020Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2019-20792 is a medium (CVSS 6.8) Double Free vulnerability in opensc_project opensc. EPSS estimates a 0.66% chance of exploitation in the next 30 days, higher than 50.4% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
37/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.8/10
010
Medium · v3.1 (NVD)
EPSS score
0.66%
0%100%
Low · -0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 4 · Related 3
OPENSUSE-SU-2021:0565-1RHSA-2020:4483SUSE-SU-2021:1168-1SUSE-SU-2022:1041-1

Timeline

  1. 29-04-2020
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.66%

Chance of exploitation in the next 30 days

Percentile

50%

Versus all other CVEs

30-day change

-0.04 pp

From 0.70% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.66%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.chromium.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • opensc< 0.20.0-1
Opensc_project1 product
Opensuse1 product
  • opensc&distro=openSUSE Tumbleweed< 0.22.0-3.1
Ubuntu1 product
  • openscAll versions (No fix recorded)

4 vendors · 4 products

References

7 links