Windows apps · Application version · August 17, 2026

Microsoft Edge Dev 153.0.4224.0

Microsoft Edge Dev 153.0.4224.0, released August 17, 2026, fixes 311 CVEs in Microsoft Edge Dev. One of them is being exploited (CVE-2026-85046); 1 on CISA KEV. Patch Radar priority: Patch now. The latest Microsoft Edge Dev is 159.0.4378.0, which also fixes every one of these CVEs.

Patch now1 on CISA KEV

Superseded. The latest Microsoft Edge Dev is 159.0.4378.0, which also fixes every CVE on this page. Install that instead.

CVEs closed
311
37 rated Critical
Exploited
1
CVE-2026-85046
Highest CVSS
9.8
Base score, 0 to 10
Highest EPSS
0.0181
78th percentile

Priority of the 311 CVEs

Patch now 1 Urgent 38 High 92 Routine 180

Applies to

ProductVersion
Microsoft Edge Dev153.0.4224.0

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
Patch now CVE-2026-85046 Chromium: CVE-2026-85046 Type confusion in V88.8 0.0181 KEVExploited
Urgent CVE-2026-72984 Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability8.8 0.0082 More likely
Urgent CVE-2026-78904 Chromium: CVE-2026-78904 Type confusion in ANGLE9.6 0.0062 None reported
Urgent CVE-2026-78989 Chromium: CVE-2026-78989 Out of bounds read in ANGLE9.6 0.0056 None reported
Urgent CVE-2026-78948 Chromium: CVE-2026-78948 Buffer overflow in WebGL9.6 0.0051 None reported
Urgent CVE-2026-78985 Chromium: CVE-2026-78985 Incorrect reference resolution in FileSystem9.6 0.0050 None reported
Urgent CVE-2026-79131 Chromium: CVE-2026-79131 Out of bounds write in ANGLE9.6 0.0048 None reported
Urgent CVE-2026-79149 Chromium: CVE-2026-79149 Use after free in ANGLE9.6 0.0048 None reported
Urgent CVE-2026-79188 Chromium: CVE-2026-79188 Out of bounds write in ANGLE9.6 0.0048 None reported
Urgent CVE-2026-79275 Chromium: CVE-2026-79275 Use after free in ANGLE9.6 0.0048 None reported
Urgent CVE-2026-79019 Chromium: CVE-2026-79019 Out of bounds write in ANGLE9.6 0.0048 None reported
Urgent CVE-2026-84324 Chromium: CVE-2026-84324 Use after free in Proxy9.0 0.0047 None reported
Urgent CVE-2026-78900 Chromium: CVE-2026-78900 Improper input validation in Media9.6 0.0046 None reported
Urgent CVE-2026-78909 Chromium: CVE-2026-78909 Use after free in Views9.6 0.0046 None reported
Urgent CVE-2026-78939 Chromium: CVE-2026-78939 Use after free in Chromecast9.6 0.0046 None reported
Urgent CVE-2026-78945 Chromium: CVE-2026-78945 Use after free in Views9.6 0.0046 None reported
Urgent CVE-2026-78951 Chromium: CVE-2026-78951 Use after free in ServiceWorker9.6 0.0046 None reported
Urgent CVE-2026-79052 Chromium: CVE-2026-79052 Use after free in Aura9.6 0.0046 None reported
Urgent CVE-2026-79056 Chromium: CVE-2026-79056 Use after free in ServiceWorker9.6 0.0046 None reported
Urgent CVE-2026-79078 Chromium: CVE-2026-79078 Use after free in FedCM9.6 0.0046 None reported
Urgent CVE-2026-79111 Chromium: CVE-2026-79111 Improper input validation in Dawn9.6 0.0046 None reported
Urgent CVE-2026-79200 Chromium: CVE-2026-79200 Use after free in Aura9.6 0.0046 None reported
Urgent CVE-2026-79232 Chromium: CVE-2026-79232 Use after free in Aura9.6 0.0046 None reported
Urgent CVE-2026-79235 Chromium: CVE-2026-79235 Use after free in WebGL9.6 0.0046 None reported
Urgent CVE-2026-79290 Chromium: CVE-2026-79290 Use after free in Aura9.6 0.0046 None reported
Showing 1 to 25 of 311 1Next

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