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Description

Incorrect calculation of buffer size in Windows TCP/IP allows an authorized attacker to deny service over an adjacent network.

PUBLISHED Reserved 2026-04-30 | Published 2026-06-09 | Updated 2026-06-10 | Assigner microsoft




MEDIUM: 5.7CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

Problem types

CWE-131: Incorrect Calculation of Buffer Size

Product status

10.0.19044.0 (custom) before 10.0.19044.7417
affected

10.0.19045.0 (custom) before 10.0.19045.7417
affected

10.0.22631.0 (custom) before 10.0.22631.7219
affected

10.0.22631.0 (custom) before 10.0.22631.7219
affected

10.0.26100.0 (custom) before 10.0.26100.8655
affected

10.0.26200.0 (custom) before 10.0.26200.8655
affected

10.0.28000.0 (custom) before 10.0.28000.2269
affected

10.0.20348.0 (custom) before 10.0.20348.5256
affected

10.0.26100.0 (custom) before 10.0.26100.32995
affected

10.0.26100.0 (custom) before 10.0.26100.32995
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42915 (Windows TCP/IP Denial of Service Vulnerability) vendor-advisory patch

cve.org (CVE-2026-42915)

nvd.nist.gov (CVE-2026-42915)

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