CVE-2026-83657
Windows Modern Device Management (MDM) Tampering Vulnerability
Weak authentication in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering 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
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Windows Modern Device Management (MDM) Tampering Vulnerability
Weak authentication in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering locally.
- Record
CVE-2026-83657- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C - Weakness
- CWE-1390
- Updated
- 2026-11-02
EUVDEUVD-2026-99318
Weak authentication in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering locally.
- Record
EUVD-2026-99318- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-xpx6-rc5v-vgmh
Weak authentication in Windows Modern Device Management (MDM) allows an authorized attacker to...
Weak authentication in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering locally.
- Record
GHSA-xpx6-rc5v-vgmh- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-1390
- Updated
- 2026-11-02
NVD
Weak authentication in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering locally.
- Record
CVE-2026-83657- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-1390
- Updated
- 2026-11-02
Affected products
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-2026-83657 is a medium vulnerability (CVSS 5.5) in Microsoft Windows 10 Version 1809, published October 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 19th percentile. No source names a fixed version.