CVE-2021-33764
published 2021-07-14CVE-2021-33764: Windows Key Distribution Center Information Disclosure Vulnerability
PriorityP429medium5.9CVSS 3.1
AVNACHPRNUINSUCHINAN
EPSS
3.05%
87.5th percentile
Windows Key Distribution Center Information Disclosure Vulnerability
Affected
19 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.7601.0 < 6.1.7601.25661 | 6.1.7601.25661 |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.6003.0 < 6.0.6003.21167 | 6.0.6003.21167 |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.23409 | 6.2.9200.23409 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.20069 | 6.3.9600.20069 |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.4530 | 10.0.14393.4530 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.2061 | 10.0.17763.2061 |
| microsoft | windows_server_version_2004 | >= 10.0.0 < 10.0.19041.1110 | 10.0.19041.1110 |
| microsoft | windows_server_version_20h2 | >= 10.0.0 < 10.0.19042.1110 | 10.0.19042.1110 |
| msrc | windows_server_2008_for_32-bit_systems_service_pack_2 | — | — |
| msrc | windows_server_2008_for_x64-based_systems_service_pack_2 | — | — |
| msrc | windows_server_2008_r2_for_x64-based_systems_service_pack_1 | — | — |
| msrc | windows_server_2012 | — | — |
| msrc | windows_server_2012_r2 | — | — |
| msrc | windows_server_2016 | — | — |
| msrc | windows_server_2019 | — | — |
| msrc | windows_server_version_2004 | — | — |
| msrc | windows_server_version_20h2 | — | — |
CVSS provenance
nvdv3.15.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:P/I:N/A:N
vendor_msrc5.9MEDIUM
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VulDB
Microsoft Windows Server 20H2 up to Server 2016 Key Distribution Center information disclosure
vuldb·2026-08-11·CVSS 5.9
CVE-2021-33764 [MEDIUM] Microsoft Windows Server 20H2 up to Server 2016 Key Distribution Center information disclosure
A vulnerability marked as problematic has been reported in Microsoft Windows. The affected element is an unknown function of the component Key Distribution Center. This manipulation causes information disclosure.
This vulnerability is registered as CVE-2021-33764. Remote exploitation of the attack is possible. No exploit is available.
Applying a patch is the recommended action to fix this issue.
GHSA
GHSA-jq93-4v6x-g5r7: Windows Key Distribution Center Information Disclosure Vulnerability
ghsa_unreviewed·2022-05-24
CVE-2021-33764 [MEDIUM] GHSA-jq93-4v6x-g5r7: Windows Key Distribution Center Information Disclosure Vulnerability
Windows Key Distribution Center Information Disclosure Vulnerability
Microsoft
Windows Key Distribution Center Information Disclosure Vulnerability
vendor_msrc·2021-07-13·CVSS 5.9
CVE-2021-33764 [MEDIUM] Windows Key Distribution Center Information Disclosure Vulnerability
Windows Key Distribution Center Information Disclosure Vulnerability
FAQ: What type of information could be disclosed by this vulnerability?
The vulnerable component uses a weak encryption algorithm or cipher. Traffic sent over a network by the vulnerable component could be decrypted and expose information related to a user or service's active session.
Windows Key Distribution Center: Windows Key Distribution Center
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=KB5004244
Reference: https://support.microsoft.com/help/5004244
Reference: https://catalog.upd
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2021-07-14
Published