THREATPORT/VULNERABILITY/CVE-2014-4071
MEDIUM SEVERITY

CVE-2014-4071

Lync Server vulnerability

CVSS
5.0
EPSS
19.0%
EPSS pct
97th
Exploited
No known
The Server in Microsoft Lync Server 2013 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon hang) via a crafted request, aka "Lync Denial of Service Vulnerability."
Affected vendor
Microsoft
Affected product
Lync Server
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Published
2014-09-10

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-2014-4071

  • Confirm whether Microsoft Lync Server is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2014-4071.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2014-4071

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2014-4071 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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