Is CVE-2020-26571 in the CISA KEV catalog?

No. CVE-2020-26571 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-26571?

CVE-2020-26571 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2020-26571?

CVE-2020-26571 has an EPSS score of 0.40% (32th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-26571?

Upgrade opensc on debian 11 to 0.21.0-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2020-26571

MEDIUM

5.5

CVSS v3

NVD

Description

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.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

openscDebian

Fixed in:0.21.0-1CVE-2020-26571

openscUbuntu

Fixed in:0.15.0-1ubuntu1+esm1USN-5281-1

Fixed in:0.17.0-3ubuntu0.1~esm1USN-5281-1

Fixed in:0.20.0-3ubuntu0.1~esm1USN-5281-1

opensc-pkcs11Ubuntu

Fixed in:0.15.0-1ubuntu1+esm1USN-5281-1

Fixed in:0.17.0-3ubuntu0.1~esm1USN-5281-1

Fixed in:0.20.0-3ubuntu0.1~esm1USN-5281-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.40%probability of exploitation in 30 days

32ndpercentile

Low risk: more likely to be exploited than 32% of all known CVEs.

References

Third-Party Advisory3

Other references1

lists.fedoraproject.org

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.