Vulnerability in Citrix Xenserver

CVE-2018-19961

An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes.

EPSS: 0.004 (33.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2018-19961?
CVE-2018-19961 is a high-severity vulnerability in Citrix Xenserver, classified under Incomplete Cleanup. CVSS score: 7.8/10. Published 2018-12-08.
How severe is CVE-2018-19961?
High severity. CVSS v3 base score is 7.8 out of 10.