Is CVE-2023-5992 in the CISA KEV catalog?

No. CVE-2023-5992 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-5992?

CVE-2023-5992 has a CVSS v3 base score of 5.6 (MEDIUM).

What is the EPSS score for CVE-2023-5992?

CVE-2023-5992 has an EPSS score of 1.16% (63th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-5992?

Upgrade opensc on debian 11 to 0.21.0-1+deb11u1 or later. Fixes are available for 9 affected products.

CVE & CISA-KEV Catalog

CVE-2023-5992

MEDIUM

5.6

CVSS v3

NVD

Description

A vulnerability was found in OpenSC where PKCS#1 encryption padding removal is not implemented as side-channel resistant. This issue may result in the potential leak of private data.

CWE-203

How to fix

Remediation Available

openscDebian

Fixed in:0.21.0-1+deb11u1CVE-2023-5992

Fixed in:0.23.0-0.3+deb12u2CVE-2023-5992

Fixed in:0.25.0~rc1-1CVE-2023-5992

openscRocky

Fixed in:0:0.20.0-8.el8_9RHSA-2024:0967

Fixed in:0:0.23.0-4.el9_3RHSA-2024:0966

openscRed Hat / RHEL

Fixed in:0:0.20.0-8.el8_9RHSA-2024:0967

Fixed in:0:0.23.0-4.el9_3RHSA-2024:0966

opensc-debuginfoRed Hat / RHEL

Fixed in:0:0.20.0-8.el8_9RHSA-2024:0967

Fixed in:0:0.23.0-4.el9_3RHSA-2024:0966

opensc-debuginfoRocky

Fixed in:0:0.20.0-8.el8_9RHSA-2024:0967

Fixed in:0:0.23.0-4.el9_3RHSA-2024:0966

opensc-debugsourceRed Hat / RHEL

Fixed in:0:0.20.0-8.el8_9RHSA-2024:0967

Fixed in:0:0.23.0-4.el9_3RHSA-2024:0966

opensc-debugsourceRocky

Fixed in:0:0.20.0-8.el8_9RHSA-2024:0967

Fixed in:0:0.23.0-4.el9_3RHSA-2024:0966

openscUbuntu

Fixed in:0.15.0-1ubuntu1+esm2USN-7346-1

Fixed in:0.17.0-3ubuntu0.1~esm2USN-7346-1

Fixed in:0.20.0-3ubuntu0.1~esm2USN-7346-1

Fixed in:0.22.0-1ubuntu2+esm1USN-7346-1

Fixed in:0.25.0~rc1-1ubuntu0.1~esm1USN-7346-1

opensc-pkcs11Ubuntu

Fixed in:0.15.0-1ubuntu1+esm2USN-7346-1

Fixed in:0.17.0-3ubuntu0.1~esm2USN-7346-1

Fixed in:0.20.0-3ubuntu0.1~esm2USN-7346-1

Fixed in:0.22.0-1ubuntu2+esm1USN-7346-1

Fixed in:0.25.0~rc1-1ubuntu0.1~esm1USN-7346-1

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 VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityLow

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

Exploit Intelligence

1.16%probability of exploitation in 30 days

63rdpercentile

Moderate risk: more likely to be exploited than 63% of all known CVEs.

References

Exploit1

usenix.org

Vendor Advisory1

github.com

Third-Party Advisory3

Issue Tracking1

bugzilla.redhat.com

Other references4

Related Vulnerabilities

Other CWE-203 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-5753	Medium	5.6	94%	-	Fix
CVE-2003-0190	Medium	5.0	77%	-	Fix
CVE-2017-5715	Medium	5.6	74%	-	Fix
CVE-2018-3639	Medium	5.5	61%	-	Fix
CVE-2023-28770	High	7.5	58%	-	Fix
CVE-2004-1602	Medium	5.0	31%	-	-

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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 2025-11-03.