Is CVE-2023-6258 in the CISA KEV catalog?

No. CVE-2023-6258 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-6258?

CVE-2023-6258 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2023-6258?

CVE-2023-6258 has an EPSS score of 0.56% (43th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-6258?

Upgrade pkcs11-provider on debian 13 to 0.3-1 or later.

CVE & CISA-KEV Catalog

CVE-2023-6258

HIGH

8.1

CVSS v3

NVD

Description

A security vulnerability has been identified in the pkcs11-provider, which is associated with Public-Key Cryptography Standards (PKCS#11). If exploited successfully, this vulnerability could result in a Bleichenbacher-like security flaw, potentially enabling a side-channel attack on PKCS#1 1.5 decryption.

CWE-1300 CWE-203

How to fix

Remediation Available

pkcs11-providerDebian

Fixed in:0.3-1CVE-2023-6258

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.56%probability of exploitation in 30 days

43rdpercentile

Moderate risk: more likely to be exploited than 43% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory1

bugzilla.redhat.com

Related Vulnerabilities

Other CWE-1300 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2026-13935	Medium	6.5	0.3%	-	Fix
CVE-2026-13922	Medium	6.5	0.3%	-	Fix
CVE-2026-13790	Medium	6.5	0.3%	-	Fix
CVE-2025-10890	Critical	9.1	0.3%	-	Fix
CVE-2026-13809	Medium	6.5	0.3%	-	Fix
CVE-2026-14074	Medium	6.5	0.3%	-	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.