CVE-2025-29834: Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-04-12 · updated 2026-08-10
Weakness: CWE-125

Description

Out-of-bounds read in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

Affected products

Microsoft Edge (Chromium): before 134.0.3124.93 — fixed in 134.0.3124.93
Microsoft Edge (Chromium): from 1.0.0.0 before 134.0.3124.93 — fixed in 134.0.3124.93

How to fix

Upgrade to a fixed version: Microsoft Edge (Chromium) 134.0.3124.93; Microsoft Edge (Chromium) 134.0.3124.93. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29834

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