Summary
Impact: Remote Code Execution. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
According to the CVSS metric, the attack vector is network (AV:N) and the user interaction is required (UI:R). What is the target context of the remote code execution?
This attack requires an authenticated client to click a link so that an unauthenticated attacker can initiate remote code execution.
How could an attacker exploit this vulnerability via the Network?
An attacker could host a specially crafted website designed to exploit the vulnerability through Microsoft Edge and then convince a user to view the website. However, in all cases an attacker would have no way to force a user to view the attacker-controlled content. Instead, an attacker would have to convince a user to take action, typically by an enticement in an email or instant message, or by getting the user to open an attachment sent through email.
According to the CVSS metrics, successful exploitation of this vulnerability could lead to major loss of confidentiality (C:H), and integrity (I:H), and some loss of availability (A:L). What does that mean for this vulnerability?
An attacker who successfully exploited this vulnerability could view sensitive information (Confidentiality), make changes to disclosed information (Integrity), and they might be able to force a crash within the browser tab (Availability).
What is the version information for this release?
134.0.3124.66: 134.0.3124.66, 3/12/2025: 3/12/2025, 134.0.6998.89: 134.0.6998.89
Security updates
134.0.3124.66 — https://docs.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security
Vulnerabilities 1
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High 7.6
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
Revision history
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#1
Information published.
References
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CVE-2025-29815 Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29815
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss