CVE-2015-6251

Gnutls vulnerability

CVSS

5.0

EPSS

19.0%

EPSS pct

97th

Exploited

No known

Double free vulnerability in GnuTLS before 3.3.17 and 3.4.x before 3.4.4 allows remote attackers to cause a denial of service via a long DistinguishedName (DN) entry in a certificate.

Affected vendor

Gnu

Affected product

Gnutls

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Published

2015-08-24

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 19.0% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2015-6251

Confirm whether Gnu Gnutls is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2015-6251.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2015-6251

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2015-6251 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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