CVE-2025-2884HighMicrosoft CVSS 5.3CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:L/E:U/RL:O/RC:C

Microsoft security update for CVE-2025-2884 — Windows

Published
October 14, 2025
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2025-2884 →

📋 Microsoft's advisory

EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-2884. This page also shows what EchelonGraph holds for CVE-2025-2884, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.

🎯 Affected products8

  • Windows 11 Version 22H2 for x64-based Systems
  • Windows 11 Version 23H2 for x64-based Systems
  • Windows 11 Version 24H2 for x64-based Systems
  • Windows 11 Version 25H2 for x64-based Systems
  • Windows 11 version 26H1 for x64-based Systems
  • Windows Server 2022, 23H2 Edition (Server Core installation)
  • Windows Server 2025
  • Windows Server 2025 (Server Core installation)

✅ Updates Microsoft lists: 4 KB articles

6 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.

KB articleUpdateFixed build
KB5066835Security Update10.0.26200.6899
KB5077179Security Update10.0.28000.1575
KB5066793Security Update10.0.22621.6060
KB5066835Security Update10.0.26100.6899
KB5066793Security Update10.0.22631.6060
KB5066780Security Update10.0.25398.1913

🧭 EchelonGraph on CVE-2025-2884

EchelonGraph score
9.8 CRITICAL
CISA KEV
Not listed
Fix status
A fix is available — apply it.

Description from the CVE record (CVE.org), as published by its numbering authority

TCG TPM2.0 Reference implementation's CryptHmacSign helper function is vulnerable to Out-of-Bounds read due to the lack of validation the signature scheme with the signature key's algorithm. See Errata Revision 1.83 and advisory TCGVRT0009 for TCG standard TPM2.0

Published by CERT/CC, the CVE Numbering Authority that assigned CVE-2025-2884, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).

🔗 References (9)