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Description

Integer underflow (wrap or wraparound) in Windows Kernel allows an authorized attacker to disclose information locally.

PUBLISHED Reserved 2026-06-04 | Published 2026-07-14 | Updated 2026-07-14 | Assigner microsoft




MEDIUM: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Problem types

CWE-191: Integer Underflow (Wrap or Wraparound)

CWE-125: Out-of-bounds Read

Product status

10.0.14393.0 (custom) before 10.0.14393.9339
affected

10.0.17763.0 (custom) before 10.0.17763.9020
affected

10.0.19044.0 (custom) before 10.0.19044.7548
affected

10.0.19045.0 (custom) before 10.0.19045.7548
affected

10.0.26100.0 (custom) before 10.0.26100.8875
affected

10.0.26200.0 (custom) before 10.0.26200.8875
affected

10.0.28000.0 (custom) before 10.0.28000.2269
affected

10.0.14393.0 (custom) before 10.0.14393.9339
affected

10.0.14393.0 (custom) before 10.0.14393.9339
affected

10.0.17763.0 (custom) before 10.0.17763.9020
affected

10.0.17763.0 (custom) before 10.0.17763.9020
affected

10.0.20348.0 (custom) before 10.0.20348.5386
affected

10.0.26100.0 (custom) before 10.0.26100.33158
affected

10.0.26100.0 (custom) before 10.0.26100.33158
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50300 (Windows DWM Core Library Information Disclosure Vulnerability) vendor-advisory patch

cve.org (CVE-2026-50300)

nvd.nist.gov (CVE-2026-50300)

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