CVE-2026-72944: Role: Windows Fax Service Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Fax Service allows an authorized attacker to elevate privileges locally.
Other sources
Role: Windows Fax Service Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
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Fixed in 10.0.22631.7582Patch KB5122880 - Upgrade
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Fixed in 6.3.9600.23397Patch KB5123066 - Upgrade
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Fixed in 10.0.14393.9512Patch KB5123099 - Upgrade
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Fixed in 10.0.28000.2954Patch KB5124012 - Upgrade
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Fixed in 10.0.17763.9245Patch KB5122876 - Upgrade
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Fixed in 6.2.9200.26349Patch KB5123065 - Upgrade
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Fixed in 10.0.26200.9445Patch KB5124008 - Upgrade
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Fixed in 10.0.26100.33438Patch KB5122871 - Upgrade
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Fixed in 10.0.19045.7725Patch KB5122878 - Upgrade
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Fixed in 10.0.26100.9445Patch KB5124008 - Upgrade
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Fixed in 10.0.19044.7725Patch KB5122878 - Upgrade
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Fixed in 10.0.20348.5622Patch KB5122882
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
Systems running the Windows Fax Service on the listed Windows 10, Windows 11, and Windows Server versions are relevant. Exploitation is local, so the attacker must already be able to run code or otherwise authenticate on the target system.
What level of access does an attacker need?
The CVSS vector indicates low privileges are required and no user interaction is needed. A successful exploit can elevate the authorized local attacker’s privileges and affect confidentiality, integrity, and availability.
How can I determine whether a system may be affected?
Identify whether the system is one of the listed Microsoft Windows versions and whether the Windows Fax Service role is present or enabled. The provided information does not include fixed update versions or other detection indicators.