The gemsafe GPK smart card software driver in OpenSC before 0.21.0-rc1 has a stack-based…
Priority LOW 25CWE-787Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 1 fixed, 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.
Summary
The gemsafe GPK smart card software driver in OpenSC before 0.21.0-rc1 has a stack-based buffer overflow in sc_pkcs15emu_gemsafeGPK_init.
Why it matters now
EPSS 0.00376 31st percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:opensc_project:opensc:*:*:*:*:*:*:*:* | up to 0.20.0 | Vulnerable | OpenSC |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 33 | Vulnerable | Fedoraproject |
- cpe:2.3:a:opensc_project:opensc:*:*:*:*:*:*:*:* Versions up to 0.20.0 Vulnerable ·OpenSC
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
Remediation
Red Hat 1 advisory
- RHSA-2021:1600 Released 2021-05-18 · Red Hat rating Moderateopensc security, bug fix, and enhancement update
- Red Hat Enterprise Linux BaseOS (v. 8) opensc-0.20.0-4.el8
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2021:1600 |
Timeline
- 2026-10-02 Threatist record created from CVE-2020-26571
- 2026-10-03 Alias added: GHSA-7c8p-jqm5-mj3q
References
Sources
- CVE-2020-26571 · CVE Program
- CVE-2020-26571 · NVD
- FIRST EPSS
- GHSA-7c8p-jqm5-mj3q · GitHub Advisory Database · CC BY 4.0
- CVE-2020-26571 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences