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CVE-2021-1676

Windows NT Lan Manager Datagram Receiver Driver Information Disclosure Vulnerability

5.5 Medium

Windows NT Lan Manager Datagram Receiver Driver 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

1.32%Down 3.2 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 5.5

Windows NT Lan Manager Datagram Receiver Driver Information Disclosure Vulnerability

Windows NT Lan Manager Datagram Receiver Driver Information Disclosure Vulnerability

Record
CVE-2021-1676
CVSS 3.1
5.5 MediumCVSS: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
EUVDEUVD-2021-7143 5.5

Windows NT Lan Manager Datagram Receiver Driver Information Disclosure Vulnerability

Record
EUVD-2021-7143
CVSS 3.1
5.5 MediumCVSS: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
2026-11-03
GitHub AdvisoriesGHSA-mprf-c48f-x8wf 5.5

Windows NT Lan Manager Datagram Receiver Driver Information Disclosure Vulnerability

Windows NT Lan Manager Datagram Receiver Driver Information Disclosure Vulnerability

Record
GHSA-mprf-c48f-x8wf
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
NVD 5.5

Windows NT Lan Manager Datagram Receiver Driver Information Disclosure Vulnerability

Record
CVE-2021-1676
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0
2.1 LowAV:L/AC:L/Au:N/C:P/I:N/A:N
Updated
2026-11-02

Affected products

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History

History
RecordedChangedSources
facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-1676 is a medium vulnerability (CVSS 5.5) in Microsoft Windows 10 Version 1507, published January 12, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.32%, the 71st percentile. No source names a fixed version.

References

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