What is CVE-2019-6502?

CVE-2019-6502 is a high-severity vulnerability in Opensc Project, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2019-01-22.

How severe is CVE-2019-6502?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2019-6502 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Opensc Project

CVE-2019-6502

sc_context_create in ctx.c in libopensc in OpenSC 0.19.0 has a memory leak, as demonstrated by a call from eidenv.

Published 2019-01-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.022 (82.5th percentile), scored 2026-10-31.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000

Affected products

Opensc Project — versions 0.19.0

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

github.com/OpenSC/OpenSC/issues/1586 (Exploit, Third Party Advisory, Issue Tracking)
www.openwall.com/lists/oss-security/2019/12/29/1 (mailing-list)
lists.debian.org/debian-lts-announce/2023/06/msg00025.html (mailing-list)

Frequently asked questions

What is CVE-2019-6502?: CVE-2019-6502 is a high-severity vulnerability in Opensc Project, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2019-01-22.
How severe is CVE-2019-6502?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2019-6502 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.