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Description

Out-of-bounds write in Windows Hotpatch Monitoring Service allows an authorized attacker to elevate privileges locally.

PUBLISHED Reserved 2026-04-30 | Published 2026-06-09 | Updated 2026-06-10 | Assigner microsoft




HIGH: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Problem types

CWE-787: Out-of-bounds Write

Product status

10.0.26100.0 (custom) before 10.0.26100.8655
affected

10.0.26200.0 (custom) before 10.0.26200.8655
affected

10.0.28000.0 (custom) before 10.0.28000.2269
affected

10.0.26100.0 (custom) before 10.0.26100.32995
affected

10.0.26100.0 (custom) before 10.0.26100.32995
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42910 (Windows Hotpatch Monitoring Service Elevation of Privilege Vulnerability) vendor-advisory patch

cve.org (CVE-2026-42910)

nvd.nist.gov (CVE-2026-42910)

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