CVE-2026-42896

Name: CVE-2026-42896
Creator: NVD / NIST
Published: 2026-05-12T18:17:26.47+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.28%

Last modified Jun 17, 2026

CVE-2026-42896 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Integer overflow or wraparound in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

Integer overflow or wraparound in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.28%

20.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Microsoft	Windows 11 24h2	< 10.0.26100.8457
Microsoft	Windows 11 25h2	< 10.0.26200.8457
Microsoft	Windows 11 26h1	< 10.0.28000.2113
Microsoft	Windows Server 2025	< 10.0.26100.32860

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42896Vendor Advisory

Timeline

Published: May 12, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-42896?

Integer overflow or wraparound in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

How severe is CVE-2026-42896?

CVE-2026-42896 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.

How do I fix CVE-2026-42896?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-42896?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST