Is CVE-2017-5334 in the CISA KEV catalog?

No. CVE-2017-5334 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-5334?

CVE-2017-5334 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2017-5334?

CVE-2017-5334 has an EPSS score of 32.75% (98th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-5334?

Upgrade gnutls28 on debian 11 to 3.5.8-1 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2017-5334

CRITICALEPSS 98th pctl

9.8

CVSS v3

NVD

Description

Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote attackers to have unspecified impact via crafted policy language information in an X.509 certificate with a Proxy Certificate Information extension.

CWE-415

How to fix

Remediation Available

gnutls28Debian

Fixed in:3.5.8-1CVE-2017-5334

gnutls26Ubuntu

Fixed in:2.12.23-12ubuntu2.6USN-3183-1

gnutls28Ubuntu

Fixed in:3.4.10-4ubuntu1.2USN-3183-1

libgnutls26Ubuntu

Fixed in:2.12.23-12ubuntu2.6USN-3183-1

libgnutls30Ubuntu

Fixed in:3.4.10-4ubuntu1.2USN-3183-1

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 ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

32.75%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

Patch4

Vendor Advisory1

gnutls.org

Third-Party Advisory3

Other references1

access.redhat.com

Related Vulnerabilities

Other CWE-415 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-25136	Medium	6.5	90%	-	Fix
CVE-2018-0101	Critical	10.0	87%	-	Fix
CVE-2003-0545	Critical	9.8	85%	-	Fix
CVE-2019-3829	Medium	5.3	59%	-	Fix
CVE-2026-33824	Critical	9.8	56%	-	Fix
CVE-2021-3407	Medium	5.5	50%	-	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 2026-05-13.