How severe is CVE-2014-4068?

CVE-2014-4068 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2014-4068 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-4068?

CVE-2014-4068 primarily affects Microsoft Lync Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-4068?

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

When was CVE-2014-4068 published?

CVE-2014-4068 was published on 2014-09-10 and last updated on 2026-06-17.

CVE-2014-4068

CVE-2014-4068 is a medium-severity vulnerability in Microsoft Lync Server with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 20% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 20% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Microsoft Lync Server
Published: 2014-09-10
Last modified: 2026-06-17

Description

The Response Group Service in Microsoft Lync Server 2010 and 2013 and the Core Components in Lync Server 2013 do not properly handle exceptions, which allows remote attackers to cause a denial of service (daemon hang) via a crafted call, aka "Lync Denial of Service Vulnerability."

Frequently asked questions

What is CVE-2014-4068?: The Response Group Service in Microsoft Lync Server 2010 and 2013 and the Core Components in Lync Server 2013 do not properly handle exceptions, which allows remote attackers to cause a denial of service (daemon hang) via a crafted call, aka "Lync Denial of Service Vulnerability."
How severe is CVE-2014-4068?: CVE-2014-4068 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2014-4068 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-4068?: CVE-2014-4068 primarily affects Microsoft Lync Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-4068?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-4068 published?: CVE-2014-4068 was published on 2014-09-10 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:microsoft:lync_server:2010:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:lync_server:2013:*:*:*:*:*:*:*

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