THREATPORT/VULNERABILITY/CVE-2017-10918
CRITICAL SEVERITY

CVE-2017-10918

Xen vulnerability

CVSS
10.0
EPSS
3.7%
EPSS pct
88th
Exploited
No known
Xen through 4.8.x does not validate memory allocations during certain P2M operations, which allows guest OS users to obtain privileged host OS access, aka XSA-222.
Affected vendor
Xen
Affected product
Xen
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-20 — Improper Input Validation
Published
2017-07-05

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 3.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2017-10918

  • Confirm whether Xen Xen is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2017-10918.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-10918

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2017-10918 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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