Microsoft Windows 7 SP1 up to Server 2019 TCP/IP Driver denial of service

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CVSS Meta Temp Score
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CTI Interest Score
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6.5$5k-$25k0.00

A vulnerability was found in Microsoft Windows (Operating System). It has been rated as critical. Affected by this issue is an unknown functionality of the component TCP/IP Driver. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. Impacted is availability. CVE summarizes:

Windows TCP/IP Driver Denial of Service Vulnerability This CVE ID is unique from CVE-2021-28319.

The weakness was published 04/13/2021 as confirmed security guidance (Website). The advisory is shared for download at portal.msrc.microsoft.com. This vulnerability is handled as CVE-2021-28439 since 03/15/2021. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 04/16/2021). The MITRE ATT&CK project declares the attack technique as T1499.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

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VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 7.5
Vendor Vector (Microsoft): 🔒

CVSSv2infoedit

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfoedit

Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔒
Status: Unproven

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

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Countermeasuresinfoedit

Recommended: Patch
Status: 🔍

Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒

Patch: portal.msrc.microsoft.com

Timelineinfoedit

03/15/2021 CVE assigned
04/13/2021 +29 days VulDB entry created
04/13/2021 +0 days Advisory disclosed
04/13/2021 +0 days Countermeasure disclosed
04/16/2021 +3 days VulDB last update

Sourcesinfoedit

Vendor: https://www.microsoft.com/
Product: https://www.microsoft.com/en-us/windows

Advisory: portal.msrc.microsoft.com
Status: Confirmed

CVE: CVE-2021-28439 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20161215

Entryinfoedit

Created: 04/13/2021 11:04 PM
Updated: 04/16/2021 06:14 PM
Changes: (2) source_cve_assigned source_cve_nvd_summary
Complete: 🔍

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