THREATPORT/VULNERABILITY/CVE-2014-6052
HIGH SEVERITY

CVE-2014-6052

Libvncserver vulnerability

CVSS
7.5
EPSS
6.8%
EPSS pct
93th
Exploited
No known
The HandleRFBServerMessage function in libvncclient/rfbproto.c in LibVNCServer 0.9.9 and earlier does not check certain malloc return values, which allows remote VNC servers to cause a denial of service (application crash) or possibly execute arbitrary code by specifying a large screen size in a (1) FramebufferUpdate, (2) ResizeFrameBuffer, or (3) PalmVNCReSizeFrameBuffer message.
Affected vendor
Libvncserver
Affected product
Libvncserver
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness type (CWE)
  • CWE-20 — Improper Input Validation
Published
2014-12-15

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 confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 6.8% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2014-6052

  • Confirm whether Libvncserver Libvncserver is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2014-6052.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2014-6052

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2014-6052 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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