CVE-2025-54518: Xen Security Advisory 490 v1 (CVE-2025-54518) - x86: CPU Opcode Cache corruption

Q: What is the severity of CVE-2025-54518?

CVE-2025-54518 has been classified as a high-severity vulnerability due to its potential impact on system integrity.

Q: How do I fix CVE-2025-54518?

To fix CVE-2025-54518, users should install the latest patches provided in the May 2026 version of Windows.

Q: Which systems are affected by CVE-2025-54518?

CVE-2025-54518 affects various versions of Microsoft Windows, including Windows 10, Windows 11, and Windows Server variants.

Q: What are the main vulnerabilities associated with CVE-2025-54518?

CVE-2025-54518 involves CPU opcode cache corruption vulnerabilities found in AMD processors.

Q: Is there a patch available for CVE-2025-54518?

Yes, patches are available through specific Microsoft update identifiers for affected Windows versions.

Published May 12, 2026

Updated

AMD: CVE-2025-54518 CPU OP Cache Corruption

Other sources

Improper isolation of shared resources within the CPU operation cache on Zen 2-based products could allow an attacker to corrupt instructions executed at a different privilege level, potentially resulting in privilege escalation.

— MITRE

This vulnerability was found and addressed by AMD. We are documenting it in the Security Update Guide to encourage customers to install the May 2026 version of Windows as soon as possible. The vulnerability assigned to this CVE is in certain processor models offered by AMD. The mitigation for this vulnerability requires a Windows update. This CVE is being documented in the Security Update Guide to announce that the latest builds of Windows enable the mitigation and provide protection against the vulnerability. Please see the following for more information:

AMD-SB-7052

— Microsoft

Affected Software

308 affected componentsFixes available

Xen Project Xen

Microsoft Windows 11=26H1

Patch available

Microsoft Windows Server 2016

Patch available

Microsoft Windows Server 2025

Patch available Patch available

Microsoft Windows Server 2016

Patch available

Microsoft Windows 11=24H2

Patch available Patch available

Microsoft Windows 10=1607

Patch available

Microsoft Windows Server 2022, 23H2 Edition

Patch available

Microsoft Windows 10=1607

Patch available

Microsoft Windows 11=24H2

Patch available Patch available

Microsoft Windows 11=25H2

Patch available Patch available

Microsoft Windows 11=25H2

Patch available Patch available

Microsoft Windows 10=21H2

Patch available

Microsoft Windows Server 2025

Patch available Patch available

Microsoft Windows 11=23H2

Patch available

Microsoft Windows 10=21H2

Patch available

Microsoft Windows 10=1809

Patch available

Microsoft Windows Server 2019

Patch available

Microsoft Windows 10=21H2

Patch available

Microsoft Windows 10=1809

Patch available

Microsoft Windows Server 2019

Patch available

Microsoft Windows 11=26H1

Patch available

Microsoft Windows 11=23H2

Patch available

Microsoft Windows 10=22H2

Patch available

Microsoft Windows 10=22H2

Patch available

Microsoft Windows 10=22H2

Patch available

Microsoft Windows Server 2022

Patch available

Microsoft Windows Server 2022

Patch available

Microsoft Windows Server 2022

Patch available Patch available

Microsoft Windows Server 2022

Patch available Patch available

Microsoft Windows 11 - extra=26H1

Patch available

Microsoft Windows 10=22H2

Patch available

Microsoft Windows 11=23H2

Patch available

Microsoft Windows 10=22H2

Patch available

Microsoft Windows 10=22H2

Patch available

IBM Cloud Pak for Data System (Yosemite 1.0)<=11.3.1.2-IF1 - 11.3.1.2-IF2

ubuntu/linux*

ubuntu/linux-aws*

ubuntu/linux-azure*

ubuntu/linux-lts-xenial*

ubuntu/linux*

ubuntu/linux-aws*

ubuntu/linux-aws-hwe*

ubuntu/linux-azure*

ubuntu/linux-gcp*

ubuntu/linux-hwe*

ubuntu/linux-hwe-edge*

ubuntu/linux-kvm*

ubuntu/linux-oracle*

ubuntu/xen*

ubuntu/linux-fips*

ubuntu/linux*

ubuntu/linux-aws*

ubuntu/linux-aws-5.0*

ubuntu/linux-aws-5.3*

ubuntu/linux-aws-5.4*

ubuntu/linux-azure*

ubuntu/linux-azure-4.15*

ubuntu/linux-azure-5.3*

ubuntu/linux-azure-5.4*

ubuntu/linux-azure-edge*

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ubuntu/linux-hwe-5.8*

ubuntu/linux-ibm*

ubuntu/linux-ibm-5.15<5.15.0-1106.110~20.04.1

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ubuntu/linux-intel-5.13*

ubuntu/linux-intel-iotg-5.15<5.15.0-1107.113~20.04.1

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ubuntu/linux-iot*

ubuntu/linux-kvm*

ubuntu/linux-lowlatency-hwe-5.15<5.15.0-184.194~20.04.1

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ubuntu/linux-nvidia-tegra-5.15<5.15.0-1064.66~20.04.1

5.15.0-1064.66~20.04.1

ubuntu/linux-oem-5.10*

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ubuntu/linux-oem-5.6*

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ubuntu/linux-oracle-5.8*

ubuntu/linux-raspi*

ubuntu/linux-raspi2*

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ubuntu/linux-riscv-5.8*

ubuntu/linux-xilinx-zynqmp*

ubuntu/xen*

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.15.0-186.196

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5.15.0-1117.126

ubuntu/linux-azure-fde-5.19*

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ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

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ubuntu/linux-gcp-6.8<6.8.0-1064.72~22.04.1

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ubuntu/linux-gke<5.15.0-1108.114

5.15.0-1108.114

ubuntu/linux-gkeop<5.15.0-1095.103

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ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5*

ubuntu/linux-hwe-6.8<6.8.0-136.136~22.04.1

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ubuntu/linux-ibm<5.15.0-1106.110

5.15.0-1106.110

ubuntu/linux-ibm-6.8<6.8.0-1061.62~22.04.1

6.8.0-1061.62~22.04.1

ubuntu/linux-intel-iot-realtime*

ubuntu/linux-intel-iotg<5.15.0-1107.113

5.15.0-1107.113

ubuntu/linux-kvm<5.15.0-1104.109

5.15.0-1104.109

ubuntu/linux-lowlatency<5.15.0-184.194

5.15.0-184.194

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5*

ubuntu/linux-lowlatency-hwe-6.8<6.8.0-136.136.2~22.04.1

6.8.0-136.136.2~22.04.1

ubuntu/linux-nvidia<5.15.0-1107.108

5.15.0-1107.108

ubuntu/linux-nvidia-6.2*

ubuntu/linux-nvidia-6.5*

ubuntu/linux-nvidia-6.8<6.8.0-1059.62~22.04.1

6.8.0-1059.62~22.04.1

ubuntu/linux-nvidia-tegra<5.15.0-1064.66

5.15.0-1064.66

ubuntu/linux-nvidia-tegra-igx<5.15.0-1053.53

5.15.0-1053.53

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1*

ubuntu/linux-oem-6.5*

ubuntu/linux-oracle<5.15.0-1109.115

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ubuntu/linux-oracle-6.5*

ubuntu/linux-oracle-6.8<6.8.0-1058.61~22.04.1

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ubuntu/linux-raspi<5.15.0-1106.109

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ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.19*

ubuntu/linux-riscv-6.5*

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6.8.0-136.136~22.04.3

ubuntu/linux-starfive-5.19*

ubuntu/linux-starfive-6.2*

ubuntu/linux-starfive-6.5*

ubuntu/linux-xilinx-zynqmp<5.15.0-1075.79

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ubuntu/xen*

ubuntu/linux-bluefield<5.15.0-1096.98

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ubuntu/linux-realtime-6.8<6.8.1-1056.57~22.04.2

6.8.1-1056.57~22.04.2

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips<5.15.0-1112.119+fips1

5.15.0-1112.119+fips1

ubuntu/linux-azure-fips<5.15.0-1117.126+fips1

5.15.0-1117.126+fips1

ubuntu/linux-fips<5.15.0-186.196+fips1

5.15.0-186.196+fips1

ubuntu/linux-gcp-fips<5.15.0-1112.122+fips1

5.15.0-1112.122+fips1

ubuntu/linux<6.8.0-136.136

6.8.0-136.136

ubuntu/linux-aws<6.8.0-1061.64

6.8.0-1061.64

ubuntu/linux-aws-6.14*

ubuntu/linux-aws-6.17*

ubuntu/linux-azure<6.8.0-1063.71

6.8.0-1063.71

ubuntu/linux-azure-6.11*

ubuntu/linux-azure-6.14*

ubuntu/linux-azure-6.17*

ubuntu/linux-azure-7.0<7.0.0-1014.14~24.04.1

7.0.0-1014.14~24.04.1

ubuntu/linux-azure-fde<6.8.0-1062.69

6.8.0-1062.69

ubuntu/linux-azure-fde-6.14*

ubuntu/linux-azure-fde-7.0<7.0.0-1013.13~24.04.1

7.0.0-1013.13~24.04.1

ubuntu/linux-azure-nvidia*

ubuntu/linux-azure-nvidia-6.14*

ubuntu/linux-gcp<6.8.0-1064.72

6.8.0-1064.72

ubuntu/linux-gcp-6.11*

ubuntu/linux-gcp-6.14*

ubuntu/linux-gcp-7.0<7.0.0-1011.11~24.04.1

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ubuntu/linux-gkeop<6.8.0-1046.50

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ubuntu/linux-hwe-6.14*

ubuntu/linux-hwe-6.17*

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ubuntu/linux-oem-6.14*

ubuntu/linux-oem-6.17*

ubuntu/linux-oem-6.8*

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ubuntu/linux-oracle-6.17*

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ubuntu/linux-realtime*

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ubuntu/linux-riscv-6.17*

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7.0.0-28.28.1~24.04.3

ubuntu/linux-vmware<6.8.0-1008.8

6.8.0-1008.8

ubuntu/linux-xilinx<6.8.0-1033.34

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ubuntu/xen*

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6.8.0-2050.52

ubuntu/linux-realtime<6.8.1-1056.57

6.8.1-1056.57

ubuntu/linux-realtime-6.14*

ubuntu/linux-realtime-6.17*

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6.8.0-1061.64+fips1

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6.8.0-1063.71+fips2

ubuntu/linux-fips<6.8.0-136.136+fips2

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ubuntu/linux-aws*

ubuntu/linux-azure*

ubuntu/linux-azure-fde*

ubuntu/linux-gcp*

ubuntu/linux-oracle*

ubuntu/linux-raspi*

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ubuntu/xen*

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ubuntu/linux-azure<7.0.0-1010.10

7.0.0-1010.10

ubuntu/linux-azure-fde<7.0.0-1009.9

7.0.0-1009.9

ubuntu/linux-gcp<7.0.0-1008.8

7.0.0-1008.8

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7.0.0-1003.4

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7.0.0-1010.10

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7.0.0-1008.8

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ubuntu/linux-riscv<7.0.0-28.28.1

7.0.0-28.28.1

ubuntu/linux-vmware*

ubuntu/xen*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1112.119~20.04.1
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Fixed in 5.15.0-1117.126~20.04.1
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Fixed in 5.15.0-1117.126~20.04.2
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Fixed in 5.15.0-1112.122~20.04.1
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Fixed in 5.15.0-186.196~20.04.1
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Fixed in 5.15.0-1106.110~20.04.1
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Fixed in 5.15.0-1107.113~20.04.1
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Fixed in 5.15.0-184.194~20.04.1
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Fixed in 5.15.0-1064.66~20.04.1
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Fixed in 5.15.0-1109.115~20.04.1
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Fixed in 5.15.0-1106.110~20.04.1
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Fixed in 5.15.0-186.196
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Fixed in 5.15.0-1112.119
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Fixed in 6.8.0-1061.64~22.04.1
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Fixed in 5.15.0-1117.126
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Fixed in 6.8.0-1063.71~22.04.1
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Fixed in 5.15.0-1117.126
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Fixed in 6.8.0-1062.69~22.04.1
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Fixed in 5.15.0-1112.122
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Fixed in 6.8.0-1064.72~22.04.1
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Fixed in 5.15.0-1108.114
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Fixed in 5.15.0-1095.103
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Fixed in 6.8.0-136.136~22.04.1
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Fixed in 5.15.0-1106.110
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Fixed in 6.8.0-1061.62~22.04.1
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Fixed in 5.15.0-1107.113
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Fixed in 5.15.0-1104.109
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Fixed in 5.15.0-184.194
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Fixed in 6.8.0-136.136.2~22.04.1
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Fixed in 5.15.0-1107.108
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Fixed in 6.8.0-1059.62~22.04.1
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Fixed in 5.15.0-1064.66
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Fixed in 5.15.0-1053.53
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Fixed in 5.15.0-1109.115
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Fixed in 6.8.0-1058.61~22.04.1
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Fixed in 5.15.0-1106.109
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Fixed in 6.8.0-136.136~22.04.3
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Fixed in 5.15.0-1075.79
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Fixed in 5.15.0-1096.98
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Fixed in 5.15.0-1104.106
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Fixed in 5.15.0-1111.120
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Fixed in 6.8.1-1056.57~22.04.2
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Fixed in 5.15.0-1112.119+fips1
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Fixed in 5.15.0-1117.126+fips1
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Fixed in 5.15.0-186.196+fips1
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Fixed in 5.15.0-1112.122+fips1
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Fixed in 6.8.0-136.136
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Fixed in 6.8.0-1061.64
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Fixed in 6.8.0-1063.71
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Fixed in 7.0.0-1014.14~24.04.1
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Fixed in 6.8.0-1062.69
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Fixed in 7.0.0-1013.13~24.04.1
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Fixed in 6.8.0-1064.72
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Fixed in 7.0.0-1011.11~24.04.1
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Fixed in 6.8.0-1059.67
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Fixed in 6.8.0-1046.50
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Fixed in 7.0.0-28.28~24.04.1
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Fixed in 6.8.0-1061.62
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Fixed in 6.8.0-136.136.2
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Fixed in 6.8.0-1059.62
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Fixed in 7.0.0-1016.16~24.04.1
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Fixed in 6.8.0-1059.62.1
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Fixed in 6.8.0-1030.31
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Fixed in 6.8.0-1058.61
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Fixed in 7.0.0-1011.11~24.04.1
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Fixed in 6.8.0-1061.65
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Fixed in 7.0.0-28.28.1~24.04.3
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Fixed in 6.8.0-1008.8
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Fixed in 6.8.0-1033.34
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Fixed in 6.8.0-1028.33
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Fixed in 6.8.0-2050.52
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Fixed in 6.8.1-1056.57
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Fixed in 6.8.0-1061.64+fips1
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Fixed in 6.8.0-1063.71+fips2
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Fixed in 6.8.0-136.136+fips2
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Fixed in 6.8.0-1064.72+fips1
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Fixed in 7.0.0-28.28
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Fixed in 7.0.0-1009.9
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Fixed in 7.0.0-1010.10
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Fixed in 7.0.0-1009.9
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Fixed in 7.0.0-1008.8
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Fixed in 7.0.0-1003.4
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Fixed in 7.0.0-1010.10
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Fixed in 7.0.0-1016.16
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Fixed in 7.0.0-2016.16
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Fixed in 7.0.0-1009.9
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Fixed in 7.0.0-1008.8
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Fixed in 7.0.0-1015.15
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Fixed in 7.0.0-28.28.1
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Fixed in 7.0.0-28.28.1
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Patch AMD-SB-7052
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Patch Xen Security Advisory 490 v1 (CVE-2025-54518) - x86: CPU Opcode Cache corruption
Compensating control
Apply the required Windows update mitigation by installing the May 2026 version of Windows as soon as possible.

Event History

May 12, 2026

CVE Published

via Microsoft·02:00 PM

Data Sourced

via Microsoft·02:00 PM

DescriptionSeverityWeaknessAffected Software

May 15, 2026

CVE Published

via MITRE·03:06 AM

Data Sourced

via MITRE·03:06 AM

DescriptionWeakness

Data Sourced

via Red Hat·05:01 AM

DescriptionSeverityAffected Software

Data Sourced

via OSV·05:16 AM

DescriptionSeverityAffected Software

Data Sourced

via NVD·05:16 AM

DescriptionSeverityWeakness

Oct 21, 2026

Data Sourced

via IBM·12:00 AM

DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

IBM-7293239

Frequently Asked Questions

What is the severity of CVE-2025-54518?

CVE-2025-54518 has been classified as a high-severity vulnerability due to its potential impact on system integrity.

How do I fix CVE-2025-54518?

To fix CVE-2025-54518, users should install the latest patches provided in the May 2026 version of Windows.

Which systems are affected by CVE-2025-54518?

CVE-2025-54518 affects various versions of Microsoft Windows, including Windows 10, Windows 11, and Windows Server variants.

What are the main vulnerabilities associated with CVE-2025-54518?

CVE-2025-54518 involves CPU opcode cache corruption vulnerabilities found in AMD processors.

Is there a patch available for CVE-2025-54518?

Yes, patches are available through specific Microsoft update identifiers for affected Windows versions.

CVE-2025-54518: Xen Security Advisory 490 v1 (CVE-2025-54518) - x86: CPU Opcode Cache corruption

Other sources

Affected Software

Remediation

Event History

Parent advisories

Frequently Asked Questions

What is the severity of CVE-2025-54518?

How do I fix CVE-2025-54518?

Which systems are affected by CVE-2025-54518?

What are the main vulnerabilities associated with CVE-2025-54518?

Is there a patch available for CVE-2025-54518?

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