Remote code execution via out-of-bounds read
Published Apr 12, 2025 · Updated Aug 10, 2026
An out-of-bounds read in Microsoft Edge (Chromium-based) before 134.0.3124.93 allows remote attackers to execute code via network content. Microsoft has not disclosed the affected Edge component or how crafted content causes the read to cross a buffer boundary. Exploitation requires user interaction and high-complexity conditions, but successful execution runs code in the browser's security context.
Summary
What happened
An out-of-bounds read in Microsoft Edge (Chromium-based) before 134.0.3124.93 allows remote attackers to execute code via network content. Microsoft has not disclosed the affected Edge component or how crafted content causes the read to cross a buffer boundary. Exploitation requires user interaction and high-complexity conditions, but successful execution runs code in the browser's security context.
The record
- CVE
- CVE-2025-29834
- Published
- Apr 12, 2025
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Microsoft Edge (Chromium-based)
- Classifications
- CWE-125, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 12, 2025CVE publishedPublication date reported by the CVE source.
- Aug 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0.0.0 <134.0.3124.93
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo