CVE-2021-33783
published 2021-07-14CVE-2021-33783: Windows SMB Information Disclosure Vulnerability Windows SMB Information Disclosure Vulnerability
medium6.5CVSS 3.1
AVNACLPRLUINSUCHINAN
EPSS
2.77%
85.3th percentile
Windows SMB Information Disclosure Vulnerability
Windows SMB Information Disclosure Vulnerability
Affected
35 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_version_1507 | >= 10.0.0 < 10.0.10240.19003 | 10.0.10240.19003 |
| microsoft | windows_10_version_1607 | >= 10.0.0 < 10.0.14393.4530 | 10.0.14393.4530 |
| microsoft | windows_10_version_1809 | >= 10.0.0 < 10.0.17763.2061 | 10.0.17763.2061 |
| microsoft | windows_10_version_1909 | >= 10.0.0 < 10.0.18363.1679 | 10.0.18363.1679 |
| microsoft | windows_10_version_2004 | >= 10.0.0 < 10.0.19041.1110 | 10.0.19041.1110 |
| microsoft | windows_10_version_20h2 | >= 10.0.0 < 10.0.19042.1110 | 10.0.19042.1110 |
| microsoft | windows_10_version_21h1 | >= 10.0.0 < 10.0.19043.1110 | 10.0.19043.1110 |
| microsoft | windows_7 | >= 6.1.0 < 6.1.7601.25661 | 6.1.7601.25661 |
| microsoft | windows_7_service_pack_1 | >= 6.1.0 < 6.1.7601.25661 | 6.1.7601.25661 |
| microsoft | windows_8.1 | >= 6.3.0 < 6.3.9600.20069 | 6.3.9600.20069 |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.0.0 < 6.1.7601.25661 | 6.1.7601.25661 |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.0 < 6.1.7601.25661 | 6.1.7601.25661 |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.0 < 6.0.6003.21167 | 6.0.6003.21167 |
| microsoft | windows_server_2012 | >= 6.2.0 < 6.2.9200.23409 | 6.2.9200.23409 |
| microsoft | windows_server_2012_r2 | >= 6.3.0 < 6.3.9600.20069 | 6.3.9600.20069 |
| microsoft | windows_server_2016 | >= 10.0.0 < 10.0.14393.4530 | 10.0.14393.4530 |
| microsoft | windows_server_2019 | >= 10.0.0 < 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_10 | — | — |
| msrc | windows_10_version_1607 | — | — |
| msrc | windows_10_version_1809 | — | — |
| msrc | windows_10_version_1909 | — | — |
| msrc | windows_10_version_2004 | — | — |
| msrc | windows_10_version_20h2 | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvdv2.04.0MEDIUMAV:N/AC:L/Au:S/C:P/I:N/A:N
cvelistv56.5MEDIUM
vendor_msrc6.5MEDIUM
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Microsoft
Windows SMB Information Disclosure Vulnerability
vendor_msrc·2021-07-13·CVSS 6.5
CVE-2021-33783 [MEDIUM] Windows SMB Information Disclosure Vulnerability
Windows SMB 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.
Windows SMB: Windows SMB
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.update.microsoft.com/v7/site/Search.aspx?q=KB5004245
Reference: https://support.microsoft.com/help/50042
VulDB
Microsoft Windows up to Server 2019 SMB information disclosure
vuldb·2026-08-11·CVSS 6.5
CVE-2021-33783 [MEDIUM] Microsoft Windows up to Server 2019 SMB information disclosure
A vulnerability classified as problematic was found in Microsoft Windows. Affected by this issue is some unknown functionality of the component SMB. The manipulation results in information disclosure.
This vulnerability is reported as CVE-2021-33783. The attack can be launched remotely. No exploit exists.
It is best practice to apply a patch to resolve this issue.
CVEList
Windows SMB Information Disclosure Vulnerability
cvelistv5·2021-07-14·CVSS 6.5
CVE-2021-33783 [MEDIUM] Windows SMB Information Disclosure Vulnerability
Windows SMB Information Disclosure Vulnerability
Windows SMB Information Disclosure Vulnerability
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2021-07-14
Published