CVE-2026-42910: Windows Hotpatch Monitoring Service Elevation of Privilege Vulnerability

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

CSIRTS triage

What: An out-of-bounds write vulnerability allows local privilege escalation.
Who is affected: Authorized users of Windows Hotpatch Monitoring Service are affected.
Urgency: Remediation is urgent due to a high severity rating of 7.8 and potential for exploitation.
Action: Users should apply the security update for Windows Hotpatch Monitoring Service.

AI-assisted analysis generated from the source advisory — verify against the original.

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EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-429100.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 20% of all scored CVEs.

CVE	CSIRTS overview	External
CVE-2026-42910	coverage & exploitation status	NVD · CVE.org