CVE-2026-85793
Windows Sysmain Service Information Disclosure Vulnerability
Exposure of sensitive system information to an unauthorized control sphere in Windows Sysmain Service allows an authorized attacker to disclose information locally.
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
CVE List Score used
Windows Sysmain Service Information Disclosure Vulnerability
Exposure of sensitive system information to an unauthorized control sphere in Windows Sysmain Service allows an authorized attacker to disclose information locally.
- Record
CVE-2026-85793- 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/E:U/RL:O/RC:C - Weakness
- CWE-497
- Updated
- 2026-11-02
EUVDEUVD-2026-99505
Exposure of sensitive system information to an unauthorized control sphere in Windows Sysmain Service allows an authorized attacker to disclose information locally.
- Record
EUVD-2026-99505- 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/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-rv28-mpm7-cr42
Exposure of sensitive system information to an unauthorized control sphere in Windows Sysmain...
Exposure of sensitive system information to an unauthorized control sphere in Windows Sysmain Service allows an authorized attacker to disclose information locally.
- Record
GHSA-rv28-mpm7-cr42- 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 - Weakness
- CWE-497
- Updated
- 2026-11-02
NVD
Exposure of sensitive system information to an unauthorized control sphere in Windows Sysmain Service allows an authorized attacker to disclose information locally.
- Record
CVE-2026-85793- 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 - Weakness
- CWE-497
- Updated
- 2026-11-02
Affected products
- microsoft windows 10 version 1607
- microsoft windows 10 version 1809
- microsoft windows 10 version 21h2
- microsoft windows 10 version 22h2
- microsoft windows 11 version 23h2
- microsoft windows 11 version 24h2
- microsoft windows 11 version 25h2
- microsoft windows 11 version 26h1
- microsoft windows 11 version 26h2
- microsoft windows server 2016
- microsoft windows server 2016 (server core installation)
- microsoft windows server 2019
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History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-85793 is a medium vulnerability (CVSS 5.5) in Microsoft Windows 10 Version 1607, published October 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.46%, the 40th percentile. No source names a fixed version.