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Recorded 23 Oct 2026 at 08:31 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position. See the latest record.

CVEMicrosoft Security Response Center

Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability

Integer overflow or wraparound in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.

Cite this recorded revision

What it said

CVE
CVE-2026-88074
Severity
Critical
CVSS base score
7.8
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Impact
Elevation of Privilege
Exploitation detected
Not reported by MSRC
Publicly disclosed
No
Exploitability
Exploitation Less Likely
Component
Windows Virtualization-Based Security (VBS) Enclave
Weakness
CWE-190: Integer Overflow or Wraparound
Issued by
Microsoft
Customer action
Required: apply the update
Affected products
Windows 11 Version 23H2 for ARM64-based Systems, Windows 11 Version 23H2 for x64-based Systems, Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems, Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 26H1 for ARM64-based Systems, Windows 11 version 26H1 for x64-based Systems, Windows 11 Version 26H2 for ARM64-based Systems, Windows 11 Version 26H2 for x64-based Systems
Updates that fix it
KB5126653: Windows 11 Version 23H2 for ARM64-based Systems, Windows 11 Version 23H2 for x64-based Systems (restart required); KB5127646: Windows 11 Version 26H1 for ARM64-based Systems, Windows 11 version 26H1 for x64-based Systems (restart required); KB5127648: Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems, Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 26H2 for ARM64-based Systems, Windows 11 Version 26H2 for x64-based Systems (restart required)
CISA KEV
Unknown: catalog evidence is incomplete or retained
EPSS
0.3%; scored 22 Oct 2026
Public exploit code
Unknown: exploit-code evidence is incomplete or retained
Published
13 Oct 2026 07:00 UTC
Last revised
13 Oct 2026 07:00 UTC
Revision note
Information published.

Source evidence when recorded

Microsoft security releases
IncompleteRead 23 Oct 2026 at 08:14 UTC
CISA KEV
IncompleteRead 23 Oct 2026 at 08:14 UTC
FIRST EPSS
IncompleteRead 23 Oct 2026 at 08:14 UTC
Public exploit code
IncompleteRead 23 Oct 2026 at 08:14 UTC

Coverage describes the sources at this observation. A complete read then does not establish their current position.

What changed

First observed 14 Oct 2026
  1. 23 Oct 2026 · 08:31:50 UTC Public exploit codeNo Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained
  2. 23 Oct 2026 · 08:31:50 UTC CISA KEVNot listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
  3. 23 Oct 2026 · 08:31:50 UTC Source coverage: public-exploit-codeCurrent → Incomplete
  4. 23 Oct 2026 · 08:31:50 UTC Source coverage: first-epssCurrent → Incomplete
  5. 23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete
  6. 23 Oct 2026 · 08:31:50 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  7. 22 Oct 2026 · 17:33:15 UTC EPSS0.3%; scored 21 Oct 2026 → 0.3%; scored 22 Oct 2026
  8. 21 Oct 2026 · 21:47:24 UTC EPSS0.3%; scored 20 Oct 2026 → 0.3%; scored 21 Oct 2026
  9. 20 Oct 2026 · 20:53:31 UTC EPSS0.3%; scored 19 Oct 2026 → 0.3%; scored 20 Oct 2026
  10. 19 Oct 2026 · 15:12:40 UTC EPSS0.3%; scored 18 Oct 2026 → 0.3%; scored 19 Oct 2026
  11. 19 Oct 2026 · 15:12:40 UTC Link: Cisco Talos analysishttps://blog.talosintelligence.com/microsoft-patch-tuesday-for-october-2026
  12. 18 Oct 2026 · 14:54:30 UTC EPSS0.3%; scored 16 Oct 2026 → 0.3%; scored 18 Oct 2026
Show 4 more recent changes
  1. 18 Oct 2026 · 14:54:30 UTCLink: October 2026 → /security?release=2026-Oct#cves
  2. 16 Oct 2026 · 16:13:25 UTCEPSS 0.3%; scored 15 Oct 2026 → 0.3%; scored 16 Oct 2026
  3. 15 Oct 2026 · 21:30:54 UTCEPSS 0.3%; scored 14 Oct 2026 → 0.3%; scored 15 Oct 2026
  4. 15 Oct 2026 · 01:07:54 UTCEPSS Not scored → 0.3%; scored 14 Oct 2026

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Sources read 25 Oct 21:06 UTC · 271 of 271 readable · 269 fully read · documentation 464/464 current

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