CVE-2025-10263: Xen Security Advisory 493 v2 (CVE-2025-10263) - Arm: Completion of memory accesses not guaranteed by completion of a TLBI

Published Jun 9, 2026
·
Updated

Arm C1-Ultra, C1-Premium, Neoverse V3 & V3AE, Neoverse V2, Neoverse V1, Neoverse-N2, Neoverse-N1, Cortex-X925, Cortex-X4, Cortex-X3, Cortex-X2, Cortex-X1 & X1C, Cortex-A710, Cortex-A78, A78AE & A78C, Cortex-A77, Cortex-A76 & A76A may allow writes to resources owned by a higher exception level.

Affected Software

27 affected componentsFixes available
Arm C1-ultra
Arm C1-premium
Arm Neoverse V3
Arm Neoverse V3AE
Arm Neoverse V2
Arm Neoverse V1
Arm Neoverse-n2
Arm Neoverse-N1
Arm Cortex-x925
Arm Cortex-x4
Arm Cortex-x3
Arm Cortex-x2
Arm Cortex-x1
Arm Cortex-x1c
Arm Cortex-a710
Arm Cortex-a78
Arm Cortex-a78ae
Arm Cortex-a78c
Arm Cortex-A77
Arm Cortex-a76
Arm Cortex-A76A
Microsoft Windows 11=23H2
Microsoft Windows 11=24H2
Microsoft Windows 11=25H2
Microsoft Windows 11=26H1
Microsoft Windows 10=22H2
Microsoft Windows 10=21H2

Event History

Jun 9, 2026
CVE Published
via MITRE·09:23 AM
Data Sourced
via MITRE·09:23 AM
DescriptionWeakness
Data Sourced
via NVD·10:16 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
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