Administrator code execution via unverified RPC connections
Published May 21, 2020 · Updated Aug 19, 2026
A security feature bypass in Microsoft Windows Task Scheduler allows man-in-the-middle attackers to execute code as an administrator over RPC. The service fails to properly verify RPC client connections and accepts a specially crafted request from an intercepted connection. Exploitation requires a man-in-the-middle position, after which administrator privileges permit program execution and data or account changes.
Summary
What happened
A security feature bypass in Microsoft Windows Task Scheduler allows man-in-the-middle attackers to execute code as an administrator over RPC. The service fails to properly verify RPC client connections and accepts a specially crafted request from an intercepted connection. Exploitation requires a man-in-the-middle position, after which administrator privileges permit program execution and data or account changes.
The record
- CVE
- CVE-2020-1113
- Published
- May 21, 2020
- Updated
- Aug 19, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-295, T1210
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 21, 2020CVE publishedPublication date reported by the CVE source.
- Aug 19, 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?
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- Affected versionversion=10.0.10240.0 <publication
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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