Citrix XenServer 8.4.x Page Reference Leak (CTX697170)

The version of Citrix XenServer installed on the remote host is 8.4.x. It is, therefore, affected by a vulnerability as referenced in the CTX697170 advisory: - The grant table cache-flush error path fails to drop a page reference, which may allow a privileged user in a guest VM to compromise or...

Citrix XenServer 8.4.x / 9.x Multiple Vulnerabilities (CTX697170)

The version of Citrix XenServer installed on the remote host is 8.4.x or 9.x. It is, therefore, affected by multiple vulnerabilities as referenced in the CTX697170 advisory: - A grant table race on a v2 - v1 - v2 version change may allow a privileged user in a guest VM to compromise or crash the...

PT-2026-115091

New Citrix XenServer flaws in versions 8.4 & 9 threaten host systems if VMs have elevated rights. Watch out for CVE-2026-79610, CVE-2026-102700, CVE-2026-102701 & -79611. The bulletin reveals host-impacting vulnerabilities, guest crash risks, and no full exploit code yet. Confirm your XenServer...

CVE-2026-23556

creationtimestamp| type| source ---|---|--- 2026-04-29 01:49:24+00:00| seen| https://www.acn.gov.it/portale/w/risolte-vulnerabilita-in-citrix-xenserver 2026-04-29 12:45:35+00:00| seen| https://bsky.app/profile/o2cloud.bsky.social/post/3mkn4wpcktx2h 2026-04-29 12:50:07+00:00| seen|...

PT-2026-26014

Name of the Vulnerable Software and Affected Versions Citrix XenServer version 8.4 Description The Intel EPT paging code includes an optimization that defers flushing of cached EPT state until the p2m lock is released. However, the freeing of paging structures is not deferred, potentially leading...

EUVD-2012-3471

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EUVD-2012-3450

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EUVD-2010-0664

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EUVD-2010-2623

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EUVD-2012-4531

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EUVD-2014-3737

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EUVD-2012-3454

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EUVD-2018-5939

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EUVD-2014-4864

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EUVD-2017-14673

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EUVD-2008-3241

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EUVD-2016-6253

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EUVD-2012-3452

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EUVD-2017-14674

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Citrix XenServer Multiple Vulnerabilities (XSA-472)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by multiple vulnerabilities: - A NULL pointer dereference in the updating of the reference TSC area. CVE-2025-27466 - A NULL pointer dereference by assuming the SIM page is mapped when a...