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7.8
CVSSv3

CVE-2018-19961

CVSSv4: NA | CVSSv3: 7.8 | CVSSv2: 6.9 | VMScore: 880 | EPSS: 0.00062 | KEV: Not Included
Published: 08/12/2018 Updated: 21/11/2024

Vulnerability Summary

An issue exists in Xen up to and including 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.

Vulnerability Trend

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xen xen

debian debian linux 9.0

citrix xenserver 7.0

citrix xenserver 7.1

citrix xenserver 7.5

citrix xenserver 7.6

Vendor Advisories

Red Hat: CVE-2018-19961
An issue was discovered in Xen through 411x 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 ...
Citrix Security Bulletins: Citrix XenServer Security Update
Description of Problem A number of security vulnerabilities have been identified in Citrix XenServer that have deployment-dependent impacts These issues affect the following supported versions of Citrix XenServer: Citrix XenServer 76 Citrix XenServer 75 Citrix XenServer 71 LTSR CU1 Citrix XenServer 70 The following issues have been addressed: ...

References

CWE-459https://nvd.nist.govhttps://access.redhat.com/security/cve/cve-2018-19961https://www.first.org/epsshttp://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.htmlhttp://www.securityfocus.com/bid/106182https://lists.debian.org/debian-lts-announce/2019/10/msg00008.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/https://support.citrix.com/article/CTX239432https://www.debian.org/security/2019/dsa-4369https://xenbits.xen.org/xsa/advisory-275.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.htmlhttp://www.securityfocus.com/bid/106182https://lists.debian.org/debian-lts-announce/2019/10/msg00008.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/https://support.citrix.com/article/CTX239432https://www.debian.org/security/2019/dsa-4369https://xenbits.xen.org/xsa/advisory-275.html
Preferred Score:
CVSSv3
CVSSv2
CVSSv3
CVSSv4
EPSS
VMScore
Recommendations:
XML external entityremote code executionCVE-2024-44136CVE-2025-21321CVE-2024-41454CVE-2024-55503insecure direct object referenceCVE-2025-20088CVE-2024-44243
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