UpHeron
All vulnerabilities

Servers and applications

CVE-2017-17563

An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging an incorrect mask for reference-count overflow checking in shadow mode.

Severity
High 7.8
Published
12 Dec 2017
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
0.4% in the next 30 daysHigher than 29% of CVEs. EPSS by FIRST, 11 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
XenServers and applications · cpe:o:xen:xen
  • Every version up to 4.9.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2017-17563
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2017-17563