CVE-2014-3466

CVE-2014-3466 is a medium-severity vulnerability in Gnu Gnutls with a CVSS 2.0 base score of 6.8. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

• Severity: Medium (CVSS 2.0 base score 6.8)
• EPSS exploit prediction: 11% (95th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Gnu Gnutls
• Published: 2014-06-03
• Last modified: 2026-06-17

Description

Buffer overflow in the read_server_hello function in lib/gnutls_handshake.c in GnuTLS before 3.1.25, 3.2.x before 3.2.15, and 3.3.x before 3.3.4 allows remote servers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a long session id in a ServerHello message.

Frequently asked questions

What is CVE-2014-3466?

Buffer overflow in the read_server_hello function in lib/gnutls_handshake.c in GnuTLS before 3.1.25, 3.2.x before 3.2.15, and 3.3.x before 3.3.4 allows remote servers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a long session id in a ServerHello message.

How severe is CVE-2014-3466?

CVE-2014-3466 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2014-3466 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-3466?

CVE-2014-3466 primarily affects Gnu Gnutls. In total, 47 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-3466?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-3466 published?

CVE-2014-3466 was published on 2014-06-03 and last updated on 2026-06-17.

References

• http://linux.oracle.com/errata/ELSA-2014-0594.html
• http://linux.oracle.com/errata/ELSA-2014-0595.html
• http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00002.html
• http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00007.html
• http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00010.html
• http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00015.html
• http://radare.today/technical-analysis-of-the-gnutls-hello-vulnerability/
• http://rhn.redhat.com/errata/RHSA-2014-0594.html
• http://rhn.redhat.com/errata/RHSA-2014-0595.html
• http://rhn.redhat.com/errata/RHSA-2014-0684.html
• http://rhn.redhat.com/errata/RHSA-2014-0815.html
• http://secunia.com/advisories/58340
• http://secunia.com/advisories/58598
• http://secunia.com/advisories/58601
• http://secunia.com/advisories/58642
• http://secunia.com/advisories/59016
• http://secunia.com/advisories/59021
• http://secunia.com/advisories/59057
• http://secunia.com/advisories/59086
• http://secunia.com/advisories/59408
• http://secunia.com/advisories/59838
• http://secunia.com/advisories/60384
• http://www-01.ibm.com/support/docview.wss?uid=swg21678776
• http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5096155
• http://www.debian.org/security/2014/dsa-2944
• http://www.gnutls.org/security.html
• http://www.novell.com/support/kb/doc.php?id=7015302
• http://www.novell.com/support/kb/doc.php?id=7015303
• http://www.securityfocus.com/bid/67741
• http://www.securitytracker.com/id/1030314

Affected products (47)

• cpe:2.3:a:gnu:gnutls:3.3.0:-:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.3.0:pre0:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.3.3:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.4:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.5:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.6:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.7:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.8:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.9:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.10:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.11:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.12:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.13:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.14:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.15:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.16:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.17:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.18:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.19:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.20:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.21:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.22:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.1.23:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.2.4:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.2.5:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.2.6:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.2.7:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.2.8:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:3.2.8.1:*:*:*:*:*:*:*

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