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Description

Buffer over-read in Windows DWM Core Library allows an authorized attacker to disclose information locally.

PUBLISHED Reserved 2026-03-26 | Published 2026-05-12 | Updated 2026-05-20 | Assigner microsoft




HIGH: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Problem types

CWE-126: Buffer Over-read

Product status

10.0.14393.0 (custom) before 10.0.14393.9140
affected

10.0.17763.0 (custom) before 10.0.17763.8755
affected

10.0.19044.0 (custom) before 10.0.19044.7291
affected

10.0.19045.0 (custom) before 10.0.19045.7291
affected

10.0.22631.0 (custom) before 10.0.22631.7079
affected

10.0.22631.0 (custom) before 10.0.22631.7079
affected

10.0.26100.0 (custom) before 10.0.26100.8457
affected

10.0.26200.0 (custom) before 10.0.26200.8457
affected

10.0.28000.0 (custom) before 10.0.28000.2113
affected

10.0.14393.0 (custom) before 10.0.14393.9140
affected

10.0.14393.0 (custom) before 10.0.14393.9140
affected

10.0.17763.0 (custom) before 10.0.17763.8755
affected

10.0.17763.0 (custom) before 10.0.17763.8755
affected

10.0.20348.0 (custom) before 10.0.20348.5139
affected

10.0.25398.0 (custom) before 10.0.25398.2330
affected

10.0.26100.0 (custom) before 10.0.26100.32860
affected

10.0.26100.0 (custom) before 10.0.26100.32860
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34336 (Windows DWM Core Library Information Disclosure Vulnerability) vendor-advisory patch

cve.org (CVE-2026-34336)

nvd.nist.gov (CVE-2026-34336)

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