CVE-2026-70185: Microsoft PowerShell Security Feature Bypass Vulnerability
Microsoft PowerShell Security Feature Bypass Vulnerability
Other sources
Protection mechanism failure in Windows PowerShell allows an authorized attacker to bypass a security feature locally.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.23470Patch KB5126836 - Upgrade
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Fixed in 10.0.14393.9612Patch KB5126868 - Upgrade
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Fixed in 6.2.9200.26434Patch KB5126835 - Upgrade
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Fixed in 10.0.20348.5761Patch KB5126655 - Upgrade
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Fixed in 10.0.19044.7807Patch KB5126657 - Upgrade
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Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
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Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
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Fixed in 10.0.26200.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
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Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
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Fixed in 10.0.17763.9376Patch KB5126651 - Upgrade
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Fixed in 10.0.26300.9711Patch KB5127648
Event History
Frequently Asked Questions
Who is exposed to this issue?
Systems running Windows PowerShell on the listed Windows 10, Windows 11, and Windows Server versions are in scope. Exploitation is local, so the attacker must be able to execute actions on the affected machine.
What level of access does an attacker need?
The attacker must already be authorized on the system and have low-level privileges. No user interaction is required for exploitation.
Can this be exploited remotely over the network?
The available data identifies the attack vector as local. It does not indicate that a network-accessible PowerShell service or remote connection alone is sufficient.
What is the likely impact if exploitation succeeds?
Successful exploitation can bypass a security feature and is rated as having high confidentiality, integrity, and availability impact. The scope is changed, meaning the impact can extend beyond the initially affected security authority.