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Vulnerability record · CVE-2026-56173 · published 14 July 2026

CVE-2026-56173: Microsoft windows 10 1809 use after free vulnerability

Microsoft · Windows 10 1809

Use after free in Windows WebView allows an authorized attacker to elevate privileges locally.

7.0 CVSS 3.1 High EPSS 0.26% · top 83.6% CWE-416 · Use after free
7.0CVSS 3.1 base score
0.26%EPSS exploitation probability, 30 days
NoNot in CISA KEV
10Affected product versions listed by NVD
1References
22 Jul 2026Last modified by NVD

Description

Use after free in Windows WebView allows an authorized attacker to elevate privileges locally.

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

Affected products

10 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56173 PatchVendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-56173), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.