Is CVE-2013-4351 in the CISA KEV catalog?

No. CVE-2013-4351 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2013-4351?

CVE-2013-4351 has a CVSS v2 base score of 5.8 (MEDIUM).

What is the EPSS score for CVE-2013-4351?

CVE-2013-4351 has an EPSS score of 2.52% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2013-4351?

Upgrade gnupg2 on debian 11 to 2.0.22-1 or later.

CVE & CISA-KEV Catalog

CVE-2013-4351

MEDIUMEPSS 83th pctl

5.8

CVSS v2

NVD

Description

GnuPG 1.4.x, 2.0.x, and 2.1.x treats a key flags subpacket with all bits cleared (no usage permitted) as if it has all bits set (all usage permitted), which might allow remote attackers to bypass intended cryptographic protection mechanisms by leveraging the subkey.

CWE-310Cryptographic Issues

How to fix

Remediation Available

gnupg2Debian

Fixed in:2.0.22-1CVE-2013-4351

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

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.52%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Other references9

Related Vulnerabilities

Other CWE-310 (Cryptographic Issues) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-3566	Low	3.4	100%	-	Fix
CVE-2015-4000	Low	3.7	100%	-	Fix
CVE-2015-0204	Medium	4.3	99%	-	Fix
CVE-2016-2107	Medium	5.9	89%	-	Fix
CVE-2016-0800	Medium	5.9	82%	-	Fix
CVE-2014-8684	Critical	9.8	72%	-	-

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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 2026-04-29.