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Description

Use after free in Windows Backup Engine allows an authorized attacker to elevate privileges locally.

PUBLISHED Reserved 2026-06-04 | Published 2026-07-14 | Updated 2026-07-14 | Assigner microsoft




HIGH: 7.0CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Problem types

CWE-416: Use After Free

Product status

10.0.19044.0 (custom) before 10.0.19044.7548
affected

10.0.19045.0 (custom) before 10.0.19045.7548
affected

10.0.26100.0 (custom) before 10.0.26100.8875
affected

10.0.26200.0 (custom) before 10.0.26200.8875
affected

10.0.28000.0 (custom) before 10.0.28000.2269
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50406 (Windows Backup Engine Elevation of Privilege Vulnerability) vendor-advisory patch

cve.org (CVE-2026-50406)

nvd.nist.gov (CVE-2026-50406)

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