CVE-2026-42910Disclosure(microsoft / windows_11_24h2)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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

microsoft CVEs Back to dashboard

0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42910

Weakness type (CWE)

CWE-787

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

windows_11_24h2
windows_11_25h2
windows_11_26h1
windows_server_2025

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Affected systems

Vendors

microsoft

Products

windows_11_24h2windows_11_25h2windows_11_26h1windows_server_2025

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Referenced assets1 URL

By indicator

https://windowsforum.com/threads/cve-2026-42910-hotpatch-monitoring-service-privilege-escalation-risk-on-windows.424657/?utm_source=x&utm_medium=social&utm_campaign=news_node84

Full discourse1 post

WindowsForum@windowsforum136d
Disclosure
🪟 CVE-2026-42910: Hotpatch Monitoring Service can still go from “patched” to “privileged.” Love that Microsoft wants less reboot… as long as it doesn’t come with more admin rights. #Windows #Microsoft #SecurityUpdates #Hotpatch https://windowsforum.com/threads/cve-2026-42910-hotpatch-monitoring-service-privilege-escalation-risk-on-windows.424657/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #PrivilegeEscalation https://t.co/SLeGUECdWP
Post summary
The post announces a privilege‑escalation vulnerability in Microsoft’s Hotpatch Monitoring Service, noting it can still gain higher privileges after patching, with no mention of PoC, exploitation, or mitigation.
0000038
1.2K followersView on X

CPE platform detail7 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

7 of 7 entries

Part	Vendor	Product	Version	Target SW	Target HW
OS	microsoft	windows_11_24h2	-	-	arm64
OS	microsoft	windows_11_24h2	-	-	x64
OS	microsoft	windows_11_25h2	-	-	arm64
OS	microsoft	windows_11_25h2	-	-	x64
OS	microsoft	windows_11_26h1	-	-	arm64
OS	microsoft	windows_11_26h1	-	-	x64
OS	microsoft	windows_server_2025	-	-	x64

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