Unauthenticated remote code execution
Published Oct 13, 2026 · Updated Oct 13, 2026
Code execution in Microsoft .NET allows remote attackers to execute code over a network through an improperly implemented security check. The retrieved Microsoft records do not identify the affected component, the checked standard, or the operation performed on untrusted input. Exploitation requires user interaction; the required action and execution context are not specified.
Summary
What happened
Code execution in Microsoft .NET allows remote attackers to execute code over a network through an improperly implemented security check. The retrieved Microsoft records do not identify the affected component, the checked standard, or the operation performed on untrusted input. Exploitation requires user interaction; the required action and execution context are not specified.
The record
- CVE
- CVE-2026-70174
- Published
- Oct 13, 2026
- Updated
- Oct 13, 2026
- Vendor
- Microsoft Corporation
- Product
- Microsoft .NET Framework 3.5 and 4.8.1
- Classifications
- CWE-358
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 13, 2026CVE publishedPublication date reported by the CVE source.
- Oct 13, 2026Record 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=4.8.1 <2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
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.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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