Jun 2026: Windows TCP/IP Denial of Service Vulnerability
CVE-2026-42915 Published on June 9, 2026
Windows TCP/IP Denial of Service Vulnerability
Incorrect calculation of buffer size in Windows TCP/IP allows an authorized attacker to deny service over an adjacent network.
Weakness Type
Incorrect Calculation of Buffer Size
The software does not correctly calculate the size to be used when allocating a buffer, which could lead to a buffer overflow.
Products Associated with CVE-2026-42915
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Affected Versions
Microsoft Windows 10 Version 21H2:- Version 10.0.19044.0 and below 10.0.19044.7417 is affected.
- Version 10.0.19045.0 and below 10.0.19045.7417 is affected.
- Version 10.0.22631.0 and below 10.0.22631.7219 is affected.
- Version 10.0.22631.0 and below 10.0.22631.7219 is affected.
- Version 10.0.26100.0 and below 10.0.26100.8655 is affected.
- Version 10.0.26200.0 and below 10.0.26200.8655 is affected.
- Version 10.0.28000.0 and below 10.0.28000.2269 is affected.
- Version 10.0.20348.0 and below 10.0.20348.5256 is affected.
- Version 10.0.26100.0 and below 10.0.26100.32995 is affected.
- Version 10.0.26100.0 and below 10.0.26100.32995 is affected.