CVE-2020-1391
An information disclosure vulnerability exists when the Windows Agent Activation Runtime (AarSvc)...
An information disclosure vulnerability exists when the Windows Agent Activation Runtime (AarSvc) fails to properly handle objects in memory, aka 'Windows Agent Activation Runtime Information Disclosure Vulnerability'.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
An information disclosure vulnerability exists when the Windows Agent Activation Runtime (AarSvc) fails to properly handle objects in memory, aka 'Windows Agent Activation Runtime Information Disclosure Vulnerability'.
- Record
CVE-2020-1391- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:P/I:N/A:N - Updated
- 2026-11-02
CVE List No score
An information disclosure vulnerability exists when the Windows Agent Activation Runtime (AarSvc) fails to properly handle objects in memory, aka 'Windows Agent Activation Runtime Information Disclosure Vulnerability'.
- Record
CVE-2020-1391- Updated
- 2026-11-02
EUVDEUVD-2020-12267 No score
An information disclosure vulnerability exists when the Windows Agent Activation Runtime (AarSvc) fails to properly handle objects in memory, aka 'Windows Agent Activation Runtime Information Disclosure Vulnerability'.
- Record
EUVD-2020-12267- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wxf8-vxfr-r99r No score
An information disclosure vulnerability exists when the Windows Agent Activation Runtime (AarSvc)...
An information disclosure vulnerability exists when the Windows Agent Activation Runtime (AarSvc) fails to properly handle objects in memory, aka 'Windows Agent Activation Runtime Information Disclosure Vulnerability'.
- Record
GHSA-wxf8-vxfr-r99r- Weakness
- CWE-200
- Updated
- 2026-11-02
Affected products
- microsoft windows 10 version 1903 for 32-bit systems
- microsoft windows 10 version 1903 for arm64-based systems
- microsoft windows 10 version 1903 for x64-based systems
- microsoft windows 10 version 1909 for 32-bit systems
- microsoft windows 10 version 1909 for arm64-based systems
- microsoft windows 10 version 1909 for x64-based systems
- microsoft windows 10 version 2004 for 32-bit systems
- microsoft windows 10 version 2004 for arm64-based systems
- microsoft windows 10 version 2004 for x64-based systems
- microsoft windows server, version 1903 (server core installation)
- microsoft windows server, version 1909 (server core installation)
- microsoft windows server, version 2004 (server core installation)
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History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-1391 is a medium vulnerability (CVSS 5.5) in Microsoft Windows 10 Version 1903 For 32-bit Systems, published July 14, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.31%, the 70th percentile. No source names a fixed version.