CVE-2026-62428

highpriority · track · 0EPSS 0.001 · 2 %ileDEEU

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.11% (2nd) EPSS

CVSS 7.8 · high

Is it mine?

12 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · cert_bund

EPSS · scored 2026-10-27

When grant-copy operations are processed, the respective grant may or may not already be in use by another operation (a mapping or another copy). For all copy operations the referenced guest frame is looked up. When another operation is already active for the grant (the grant is "pinned"), what is being supplied back to actually carry out permission checks and copy operation may not be consistent: The permission check may be carried out on a page different from the one involved in the copy.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.8highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondaryexploitability 1.1 · impact 6

v3.17.1highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-367US

affected products (12)

Products and version ranges known to be affected.

Citrix Systems XenServer 8.4all versionscert_bundDEcpe:/a:citrix:xenserver:8.4
Citrix Systems XenServer 9all versionscert_bundDEcpe:/a:citrix:xenserver:9
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
Open Source Xen 4.17.xall versionscert_bundDEcpe:/o:xen:xen:4.17.x
Open Source Xen 4.18.xall versionscert_bundDEcpe:/o:xen:xen:4.18.x
Open Source Xen 4.19.xall versionscert_bundDEcpe:/o:xen:xen:4.19.x
Open Source Xen 4.20.xall versionscert_bundDEcpe:/o:xen:xen:4.20.x
Open Source Xen 4.21.xall versionscert_bundDEcpe:/o:xen:xen:4.21.x
Open Source Xen 4.22.xall versionscert_bundDEcpe:/o:xen:xen:4.22.x
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2568Xen: Mehrere SchwachstellenDeutsch2026-07-28csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Xen ausnutzen, um seine Privilegien zu erhöhen, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand auszulösen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund NVD CVE.org MITRE

published 2026-07-28modified 2026-07-28

references (7)

External citations — patches, advisories, analysis.

scry

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