Remote code execution via stack-based buffer overflow
Published Sep 24, 2025 · Updated Sep 24, 2025
Stack-based buffer overflow in Microsoft Edge before 140.0.3485.81 allows remote authenticated users to execute code via unspecified network input. Microsoft has not published the affected component, triggering input, or operation that overwrites stack memory. Exploitation requires low privileges and user interaction; successful exploitation grants code execution and can interrupt the browser.
Summary
What happened
Stack-based buffer overflow in Microsoft Edge before 140.0.3485.81 allows remote authenticated users to execute code via unspecified network input. Microsoft has not published the affected component, triggering input, or operation that overwrites stack memory. Exploitation requires low privileges and user interaction; successful exploitation grants code execution and can interrupt the browser.
The record
- CVE
- CVE-2025-59251
- Published
- Sep 24, 2025
- Updated
- Sep 24, 2025
- Vendor
- Microsoft
- Product
- Microsoft Edge (Chromium-based)
- Classifications
- CWE-121, CWE-94, T1203
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 24, 2025CVE publishedPublication date reported by the CVE source.
- Sep 24, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0.0.0 <140.0.3485.81
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.
Weakness, pattern, technique
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
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Your stack
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