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CVE-2026-84004 AMD Zen Information Disclosure Vulnerability

5.5 mediumEPSS 0.4%

Medium (5.5) in microsoft. EPSS 0.4% estimated probability of exploitation activity in the next 30 days.

On this page
Processor optimization removal or modification of security-critical code in AMD Zen allows an authorized attacker to disclose information locally.

Severity

CVSS 3.1

5.5 medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS
0.4% estimated probability of exploitation activity in the next 30 days; 38th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC)
Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-11. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWE
CWE-1037 Processor Optimization Removal or Modification of Security-critical Code
Published
Modified
Assigned by
microsoft (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

  • microsoft:windows 10 version 1607
  • microsoft:windows 10 version 1809
  • microsoft:windows 10 version 21h2
  • microsoft:windows 10 version 22h2
  • microsoft:windows 11 version 23h2
  • microsoft:windows 11 version 24h2
  • microsoft:windows 11 version 25h2
  • microsoft:windows 11 version 26h1
  • microsoft:windows 11 version 26h2
  • microsoft:windows server 2012
  • microsoft:windows server 2012 (server core installation)
  • microsoft:windows server 2012 r2
  • microsoft:windows server 2012 r2 (server core installation)
  • microsoft:windows server 2016
  • microsoft:windows server 2016 (server core installation)
  • microsoft:windows server 2019
  • microsoft:windows server 2019 (server core installation)
  • microsoft:windows server 2022
  • microsoft:windows server 2025
  • microsoft:windows server 2025 (server core installation)

Versions

From the CNA's record in the CVE List.

ProductAffected
Microsoft Windows 10 Version 1607from 10.0.14393.0 before 10.0.14393.9612
Microsoft Windows 10 Version 1809from 10.0.17763.0 before 10.0.17763.9376
Microsoft Windows 10 Version 21H2from 10.0.19044.0 before 10.0.19044.7807
Microsoft Windows 10 Version 22H2from 10.0.19045.0 before 10.0.19045.7807
Microsoft Windows 11 version 23H2from 10.0.22631.0 before 10.0.22631.7652
Microsoft Windows 11 Version 23H2from 10.0.22631.0 before 10.0.22631.7652
Microsoft Windows 11 Version 24H2from 10.0.26100.0 before 10.0.26100.9711
Microsoft Windows 11 Version 25H2from 10.0.26200.0 before 10.0.26200.9711
Microsoft Windows 11 version 26H1from 10.0.28000.0 before 10.0.28000.3231
Microsoft Windows 11 Version 26H2from 10.0.26300.0 before 10.0.26300.9711
Microsoft Windows Server 2012from 6.2.9200.0 before 6.2.9200.26434
Microsoft Windows Server 2012 (Server Core installation)from 6.2.9200.0 before 6.2.9200.26434
Microsoft Windows Server 2012 R2from 6.3.9600.0 before 6.3.9600.23470
Microsoft Windows Server 2012 R2 (Server Core installation)from 6.3.9600.0 before 6.3.9600.23470
Microsoft Windows Server 2016from 10.0.14393.0 before 10.0.14393.9612
Microsoft Windows Server 2016 (Server Core installation)from 10.0.14393.0 before 10.0.14393.9612
Microsoft Windows Server 2019from 10.0.17763.0 before 10.0.17763.9376
Microsoft Windows Server 2019 (Server Core installation)from 10.0.17763.0 before 10.0.17763.9376
Microsoft Windows Server 2022from 10.0.20348.0 before 10.0.20348.5761
Microsoft Windows Server 2025from 10.0.26100.0 before 10.0.26100.33650
Microsoft Windows Server 2025 (Server Core installation)from 10.0.26100.0 before 10.0.26100.33650

Attack patterns (CAPEC)

  • CAPEC-663 Exploitation of Transient Instruction Execution Likelihood: Low · Severity: Very High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

Check your stackJSON