Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-72947

CVE-2026-72947HIGH

Microsoft Windows 10 Version 1607 — Windows File History Service Elevation of Privilege Vulnerability

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   H   L   N  U  H  H  H    7.0   .0027   17.1     —

AFFECTED
  Product                  Versions        Fixed
  Windows 10 Version 1607  10.0.14393.0 –  —
  Windows 10 Version 1809  10.0.17763.0 –  —
  Windows 10 Version 21H2  10.0.19044.0 –  —
  Windows 10 Version 22H2  10.0.19045.0 –  —
  Windows 11 version 23H2  10.0.22631.0 –  —
  Windows 11 Version 23H2  10.0.22631.0 –  —
  Windows 11 Version 24H2  10.0.26100.0 –  —
  Windows 11 Version 25H2  10.0.26200.0 –  —
  Windows 11 version 26H1  10.0.28000.0 –  —
  Windows Server 2016      10.0.14393.0 –  —
  + 3 more

TIMELINE
  Aug 10  Reserved by microsoft
  Sep 8   Published (CNA: microsoft)
  Sep 21  RESCORED — CVE-2026-72947 (Microsoft Windows 10 Version 1607). CVSS 6.4 → 7 (NVD).

CWE-191 · CNA: microsoft · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

Integer underflow (wrap or wraparound) in Windows File History Service allows an authorized attacker to elevate privileges locally.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 10, 2026	Reserved	Reserved by microsoft
September 8, 2026	Published	Published (CNA: microsoft)
September 21, 2026	RESCORED	RESCORED — CVE-2026-72947 (Microsoft Windows 10 Version 1607). CVSS 6.4 → 7 (NVD).

Affected

Affected products and packages — 13 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Microsoft	Windows 10 Version 1607	—	10.0.14393.0	—
Microsoft	Windows 10 Version 1809	—	10.0.17763.0	—
Microsoft	Windows 10 Version 21H2	—	10.0.19044.0	—
Microsoft	Windows 10 Version 22H2	—	10.0.19045.0	—
Microsoft	Windows 11 version 23H2	—	10.0.22631.0	—
Microsoft	Windows 11 Version 23H2	—	10.0.22631.0	—
Microsoft	Windows 11 Version 24H2	—	10.0.26100.0	—
Microsoft	Windows 11 Version 25H2	—	10.0.26200.0	—
Microsoft	Windows 11 version 26H1	—	10.0.28000.0	—
Microsoft	Windows Server 2016	—	10.0.14393.0	—
Microsoft	Windows Server 2016 (Server Core installation)	—	10.0.14393.0	—
Microsoft	Windows Server 2019	—	10.0.17763.0	—
Microsoft	Windows Server 2019 (Server Core installation)	—	10.0.17763.0	—

Weaknesses

CWE-191

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72947 [vendor-advisory, patch]

Authoritative record: CVE-2026-72947 at cve.org

Vendors: microsoft

Weaknesses: CWE-191

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-72947 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.