UpHeron
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Servers and applications

CVE-2014-1666

The do_physdev_op function in Xen 4.1.5, 4.1.6.1, 4.2.2 through 4.2.3, and 4.3.x does not properly restrict access to the (1) PHYSDEVOP_prepare_msix and (2) PHYSDEVOP_release_msix operations, which allows local PV guests to cause a denial of service (host or guest malfunction) or possibly gain privileges via unspecified vectors.

Severity
High 8.3
Published
26 Jan 2014
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
0.9% in the next 30 daysHigher than 59% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-264
Attack
From the same local network · No login needed
Attacker can
Read data · Change data · Take it down
CVSS vector
AV:A/AC:L/Au:N/C:C/I:C/A:C
Sources
NVD

Affected software

SoftwareAffected versions
XenServers and applications · cpe:o:xen:xen
  • Version 4.1.5
  • Version 4.1.6.1
  • Version 4.2.2
  • Version 4.2.3
  • Version 4.3.0
  • Version 4.3.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2014-1666
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2014-1666