Authenticated privilege escalation via undisclosed integer overflow
Published Jul 14, 2026 · Updated Jul 14, 2026
Integer overflow in Microsoft Windows Remote Access Service Infrastructure allows remote authenticated users to elevate privileges over a network. Microsoft identifies the component and weakness class but has not disclosed the affected calculation, input field, or resulting memory operation. Successful exploitation requires existing low-privileged access and grants higher privileges on the affected Windows system.
Summary
What happened
Integer overflow in Microsoft Windows Remote Access Service Infrastructure allows remote authenticated users to elevate privileges over a network. Microsoft identifies the component and weakness class but has not disclosed the affected calculation, input field, or resulting memory operation. Successful exploitation requires existing low-privileged access and grants higher privileges on the affected Windows system.
The record
- CVE
- CVE-2026-56647
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-190, T1068
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 14, 2026CVE publishedPublication date reported by the CVE source.
- Jul 14, 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=10.0.17763.0 <10.0.17763.9020
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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