Windows apps · Application version · January 22, 2025

Microsoft Edge Dev 134.0.3081.2

Microsoft Edge Dev 134.0.3081.2, released January 22, 2025, fixes 16 CVEs in Microsoft Edge Dev. None of them is reported as exploited. Patch Radar priority: High. The latest Microsoft Edge Dev is 159.0.4378.0, which also fixes every one of these CVEs.

High

Superseded.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

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

9.6

Base score, 0 to 10

Highest EPSS

0.0161

76th percentile

Priority of the 16 CVEs

Patch now 0
                                Urgent 0
                                High 10
                                Routine 6

Applies to

Product	Version
Microsoft Edge Dev	134.0.3081.2

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2025-21279	Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability	8.8	0.0161	Exploitation Less Likely
High	CVE-2025-21283	Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability	8.8	0.0149	Exploitation Less Likely
High	CVE-2025-21408	Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability	8.8	0.0132	Exploitation Unlikely
High	CVE-2025-21342	Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability	8.8	0.0125	Exploitation Less Likely
High	CVE-2025-0999	Chromium: CVE-2025-0999 Heap buffer overflow in V8	8.8	0.0063	None reported
High	CVE-2025-1426	Chromium: CVE-2025-1006 Use after free in Network	8.8	0.0059	None reported
High	CVE-2025-1006	Chromium: CVE-2025-1426 Heap buffer overflow in GPU	8.8	0.0050	None reported
High	CVE-2025-0444	Chromium: CVE-2025-0444 Use after free in Skia	9.6	0.0046	None reported
High	CVE-2025-0995	Chromium: CVE -2025-0995 Use after free in V8	8.8	0.0045	None reported
High	CVE-2025-0997	Chromium: CVE -2025-0997 Use after free in Navigation	8.1	0.0040	None reported
Routine	CVE-2025-21404	Microsoft Edge (Chromium-based) Spoofing Vulnerability	4.3	0.0108	Exploitation Less Likely
Routine	CVE-2025-21267	Microsoft Edge (Chromium-based) Spoofing Vulnerability	4.4	0.0057	Exploitation Less Likely
Routine	CVE-2025-0445	Chromium: CVE-2025-0445 Use after free in V8	5.4	0.0039	None reported
Routine	CVE-2025-0451	Chromium: CVE-2025-0451 Inappropriate implementation in Extensions API	6.3	0.0037	None reported
Routine	CVE-2025-0996	Chromium: CVE -2025-0996 Inappropriate implementation in Browser UI	5.4	0.0036	None reported
Routine	CVE-2025-21401	Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability	4.5	0.0032	Exploitation Less Likely

Other Microsoft Edge Dev versions with security fixes

Microsoft Edge Dev 157.0.4322.0
Microsoft Edge Dev
Microsoft Edge Dev 156.0.4285.0
Microsoft Edge Dev
Microsoft Edge Dev 155.0.4273.0
Microsoft Edge Dev
Microsoft Edge Dev 154.0.4238.0
Microsoft Edge Dev
Microsoft Edge Dev 153.0.4224.0
Microsoft Edge Dev
Microsoft Edge Dev 152.0.4167.0
Microsoft Edge Dev

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