7.8
HIGH
CVE-2021-43238
Microsoft Windows RDP Elevation of Privilege
Description

Windows Remote Access Elevation of Privilege Vulnerability

INFO

Published Date :

Dec. 15, 2021, 3:15 p.m.

Last Modified :

July 12, 2022, 5:42 p.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2021-43238 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft windows_10
2 Microsoft windows_7
3 Microsoft windows_8.1
4 Microsoft windows_rt_8.1
5 Microsoft windows_server_2008
6 Microsoft windows_server_2012
7 Microsoft windows_server_2016
8 Microsoft windows_server_2019
9 Microsoft windows_server
10 Microsoft windows_10_1607
11 Microsoft windows_10_1809
12 Microsoft windows_10_20h2
13 Microsoft windows_10_21h2
14 Microsoft windows_server_2022
15 Microsoft windows_11_21h2
16 Microsoft windows_11
17 Microsoft windows_10_1507
18 Microsoft windows_10_21h1
19 Microsoft windows_10_1909
20 Microsoft windows_server_20h2
21 Microsoft windows_server_2004
22 Microsoft windows_server_2012_r2
23 Microsoft windows_server_2008_r2
24 Microsoft windows_server_2008_sp2
: Total Affected Vendor : 1 | Products : 24
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-43238.

URL Resource
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43238 Patch Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-019/ Third Party Advisory VDB Entry

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-43238 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-43238 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Jul. 12, 2022

    Action Type Old Value New Value
    Changed CWE CWE-269 CWE-59
  • CPE Deprecation Remap by [email protected]

    May. 23, 2022

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:microsoft:windows_server:2004:*:*:*:*:*:*:* OR *cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 23, 2022

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:microsoft:windows_server:20h2:*:*:*:*:*:*:* OR *cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:*
  • Modified Analysis by [email protected]

    Apr. 01, 2022

    Action Type Old Value New Value
    Removed CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Removed CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:P)
    Removed CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://www.zerodayinitiative.com/advisories/ZDI-22-019/ No Types Assigned https://www.zerodayinitiative.com/advisories/ZDI-22-019/ Third Party Advisory, VDB Entry
    Changed CPE Configuration OR *cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server:20h2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server:2004:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server:2022:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp2:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp2:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* OR *cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server:20h2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server:2004:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server:2022:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jan. 06, 2022

    Action Type Old Value New Value
    Added Reference https://www.zerodayinitiative.com/advisories/ZDI-22-019/ [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 29, 2021

    Action Type Old Value New Value
    Added CVSS V3.1 Microsoft Corporation AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Initial Analysis by [email protected]

    Dec. 22, 2021

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43238 No Types Assigned https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43238 Patch, Vendor Advisory
    Added CWE NIST CWE-269
    Added CPE Configuration OR *cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server:20h2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server:2004:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server:2022:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp2:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp2:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-43238 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-43238 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.06 }} 0.02%

score

0.25351

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: