How severe is CVE-2015-3308?

CVE-2015-3308 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2015-3308 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-3308?

CVE-2015-3308 primarily affects Gnu Gnutls. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-3308?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2015-3308 published?

CVE-2015-3308 was published on 2015-09-02 and last updated on 2026-06-17.

CVE-2015-3308

CVE-2015-3308 is a high-severity vulnerability in Gnu Gnutls with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Gnu Gnutls
Published: 2015-09-02
Last modified: 2026-06-17

Description

Double free vulnerability in lib/x509/x509_ext.c in GnuTLS before 3.3.14 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted CRL distribution point.

Frequently asked questions

What is CVE-2015-3308?: Double free vulnerability in lib/x509/x509_ext.c in GnuTLS before 3.3.14 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted CRL distribution point.
How severe is CVE-2015-3308?: CVE-2015-3308 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2015-3308 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3308?: CVE-2015-3308 primarily affects Gnu Gnutls. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-3308?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2015-3308 published?: CVE-2015-3308 was published on 2015-09-02 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*

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