How severe is CVE-2019-6502?

CVE-2019-6502 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-6502 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6502?

CVE-2019-6502 affects Opensc Project Opensc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-6502?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-6502 published?

CVE-2019-6502 was published on 2019-01-22 and last updated on 2026-06-17.

CVE-2019-6502

CVE-2019-6502 is a high-severity vulnerability in Opensc Project Opensc with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-401.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-401
Affected product: Opensc Project Opensc
Published: 2019-01-22
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is 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.
How severe is CVE-2019-6502?: CVE-2019-6502 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-6502 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6502?: CVE-2019-6502 affects Opensc Project Opensc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-6502?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-6502 published?: CVE-2019-6502 was published on 2019-01-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:opensc_project:opensc:0.19.0:*:*:*:*:*:*:*

More vulnerabilities in Opensc Project Opensc

CVE-2021-34193 — High (CVSS 7.5): Stack overflow vulnerability in OpenSC smart card middleware before 0.23 via crafted responses to APDUs.
CVE-2019-16058 — High (CVSS 7.5): An issue was discovered in the pam_p11 component 0.2.0 and 0.3.0 for OpenSC. If a smart card creates a signature with a…
CVE-2023-2977 — High (CVSS 7.1): A vulnerbility was found in OpenSC. This security flaw cause a buffer overrun vulnerability in pkcs15…
CVE-2019-20792 — Medium (CVSS 6.8): OpenSC before 0.20.0 has a double free in coolkey_free_private_data because coolkey_add_object in…
CVE-2018-16393 — Medium (CVSS 6.8): Several buffer overflows when handling responses from a Gemsafe V1 Smartcard in gemsafe_get_cert_len in…
CVE-2018-16392 — Medium (CVSS 6.8): Several buffer overflows when handling responses from a TCOS Card in tcos_select_file in libopensc/card-tcos.c in…

All CVEs affecting Opensc Project Opensc →

Other CWE-401 (Missing Release of Memory after Effective Lifetime) vulnerabilities

CVE-2022-0742 — Critical (CVSS 9.1): Memory leak in icmp6 implementation in Linux Kernel 5.13+ allows a remote attacker to DoS a host by making it go…
CVE-2024-25450 — High (CVSS 8.8): imlib2 v1.9.1 was discovered to mishandle memory allocation in the function init_imlib_fonts().
CVE-2023-33718 — High (CVSS 8.8): mp4v2 v2.1.3 was discovered to contain a memory leak via MP4File::ReadString() at mp4file_io.cpp
CVE-2021-40633 — High (CVSS 8.8): A memory leak (out-of-memory) in gif2rgb in util/gif2rgb.c in giflib 5.1.4 allows remote attackers trigger an out of…
CVE-2021-3492 — High (CVSS 8.8): Shiftfs, an out-of-tree stacking file system included in Ubuntu Linux kernels, did not properly handle faults occurring…
CVE-2019-17340 — High (CVSS 8.8): An issue was discovered in Xen through 4.11.x allowing x86 guest OS users to cause a denial of service or gain…

Browse all CWE-401 (Missing Release of Memory after Effective Lifetime) vulnerabilities →