CVE-2021-26869
published 2021-03-11CVE-2021-26869: Windows ActiveX Installer Service Information Disclosure Vulnerability
PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCHINAN
EPSS
0.96%
59.0th percentile
Windows ActiveX Installer Service Information Disclosure Vulnerability
Affected
45 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.18874 | 10.0.10240.18874 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.4283 | 10.0.14393.4283 |
| microsoft | windows_10_version_1803 | >= 10.0.0 < 10.0.17134.2087 | 10.0.17134.2087 |
| microsoft | windows_10_version_1809 | >= 10.0.0 < 10.0.17763.1817 | 10.0.17763.1817 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.1817 | 10.0.17763.1817 |
| microsoft | windows_10_version_1909 | >= 10.0.0 < 10.0.18363.1440 | 10.0.18363.1440 |
| microsoft | windows_10_version_2004 | >= 10.0.0 < 10.0.19043.867 | 10.0.19043.867 |
| microsoft | windows_10_version_20h2 | >= 10.0.0 < 10.0.19043.867 | 10.0.19043.867 |
| microsoft | windows_7 | >= 6.1.0 < 6.1.7601.24566 | 6.1.7601.24566 |
| microsoft | windows_7_service_pack_1 | >= 6.1.0 < 6.1.7601.24566 | 6.1.7601.24566 |
| microsoft | windows_8.1 | >= 6.3.0 < 6.3.9600.19968 | 6.3.9600.19968 |
| microsoft | windows_server_2008 | — | — |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.7601.0 < 6.1.7601.24566 | 6.1.7601.24566 |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.23298 | 6.2.9200.23298 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.19968 | 6.3.9600.19968 |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2016 | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvdv2.02.1LOWAV:L/AC:L/Au:N/C:P/I:N/A:N
vendor_msrc5.5MEDIUM
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VulDB
Microsoft Windows up to Server 2019 ActiveX Installer Service information disclosure
vuldb·2026-08-20·CVSS 5.5
CVE-2021-26869 [MEDIUM] Microsoft Windows up to Server 2019 ActiveX Installer Service information disclosure
A vulnerability was found in Microsoft Windows. It has been declared as problematic. This issue affects some unknown processing of the component ActiveX Installer Service. The manipulation results in information disclosure.
This vulnerability was named CVE-2021-26869. The attack needs to be approached locally. There is no available exploit.
It is advisable to implement a patch to correct this issue.
GHSA
GHSA-qxc8-mx7f-2hhr: Windows ActiveX Installer Service Information Disclosure Vulnerability
ghsa_unreviewed·2022-05-24
CVE-2021-26869 [MEDIUM] CWE-200 GHSA-qxc8-mx7f-2hhr: Windows ActiveX Installer Service Information Disclosure Vulnerability
Windows ActiveX Installer Service Information Disclosure Vulnerability
Microsoft
Windows ActiveX Installer Service Information Disclosure Vulnerability
vendor_msrc·2021-03-09·CVSS 5.5
CVE-2021-26869 [MEDIUM] Windows ActiveX Installer Service Information Disclosure Vulnerability
Windows ActiveX Installer Service Information Disclosure Vulnerability
FAQ: What type of information could be disclosed by this vulnerability?
The type of information that could be disclosed if an attacker successfully exploited this vulnerability is unauthorized file system access - reading from the file system.
Microsoft ActiveX: Microsoft ActiveX
Microsoft: Microsoft
Impact: Information Disclosure
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely;DOS:N/A
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5000809
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5000822
Reference: https://support.microsoft.com/help/5000822
Reference: https:
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2021-03-11
Published