CVE-2026-33837: Windows TCP/IP Local Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
Other sources
Windows TCP/IP Local Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
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Fixed in 10.0.14393.9140Patch KB5087537 - Upgrade
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Fixed in 10.0.28000.2113Patch KB5089548 - Upgrade
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Fixed in 6.2.9200.26079Patch KB5087470 - Upgrade
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Fixed in 6.3.9600.23181Patch KB5087471 - Upgrade
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Fixed in 10.0.26100.32860Fixed in 10.0.26100.32772Patch KB5087423 - Upgrade
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Fixed in 10.0.26100.8457Fixed in 10.0.26100.8390Patch KB5089466 - Upgrade
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Fixed in 10.0.22631.7079Patch KB5087420 - Upgrade
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Fixed in 10.0.25398.2330Patch KB5087541 - Upgrade
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Fixed in 10.0.22631.7219Patch KB5093998 - Upgrade
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Fixed in 10.0.26200.8457Fixed in 10.0.26200.8390Patch KB5089466 - Upgrade
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Fixed in 10.0.19045.7417Patch KB5094127 - Upgrade
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Fixed in 10.0.19044.7291Patch KB5087544 - Upgrade
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Fixed in 10.0.20348.5139Fixed in 10.0.20348.5074Patch KB5087424 - Upgrade
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Fixed in 10.0.17763.8755Patch KB5087538
Event History
Frequently Asked Questions
What is the severity of CVE-2026-33837?
CVE-2026-33837 is categorized as a local elevation of privilege vulnerability, which can lead to significant security risks.
How do I fix CVE-2026-33837?
To fix CVE-2026-33837, apply the relevant security updates and patches provided by Microsoft for your affected Windows version.
Which Windows versions are affected by CVE-2026-33837?
CVE-2026-33837 affects multiple versions of Windows including Windows 10, Windows 11, Windows Server 2012, and Windows Server 2016.
Can CVE-2026-33837 be exploited remotely?
No, CVE-2026-33837 requires local access to the system to exploit the vulnerability.
Is CVE-2026-33837 being actively exploited in the wild?
As of the current analysis, there is no confirmation that CVE-2026-33837 is being actively exploited in the wild.