THREATPORT/VULNERABILITY/CVE-2018-15127
CRITICAL SEVERITY

CVE-2018-15127

Libvncserver vulnerability

CVSS
9.8
EPSS
15.1%
EPSS pct
96th
Exploited
No known
LibVNC before commit 502821828ed00b4a2c4bef90683d0fd88ce495de contains heap out-of-bound write vulnerability in server code of file transfer extension that can result remote code execution
Affected vendor
Libvnc Project
Affected product
Libvncserver
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2018-12-19

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 15.1% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2018-15127

  • Confirm whether Libvnc Project Libvncserver is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2018-15127.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-15127

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-15127 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2018-15127?

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