CVE-2021-36934
Scores
EPSS
Percentile: 91.0%
CVSS
CVSS Score: 7.8/10
All CVSS Scores
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Local (L)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Privileges Required
Low (L)
Describes the level of privileges an attacker must possess
User Interaction
None (N)
Captures the requirement for a human user participation
Scope
Unchanged (U)
Determines if a successful attack impacts components beyond the vulnerable component
Confidentiality Impact
High (H)
Measures the impact to the confidentiality of information
Integrity Impact
High (H)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
High (H)
Measures the impact to the availability of the impacted component
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Local (L)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Authentication
None (N)
Describes the level of privileges an attacker must possess
Confidentiality Impact
Partial
Measures the impact to the confidentiality of information
Integrity Impact
Partial
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
Partial
Measures the impact to the availability of the impacted component
Description
An elevation of privilege vulnerability exists because of overly permissive Access Control Lists (ACLs) on multiple system files, including the Security Accounts Manager (SAM) database. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
An attacker must have the ability to execute code on a victim system to exploit this vulnerability.
After installing this security update, you must manually delete all shadow copies of system files, including the SAM database, to fully mitigate this vulnerabilty. Simply installing this security update will not fully mitigate this vulnerability. See KB5005357- Delete Volume Shadow Copies.
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Sources
Related Vulnerabilities
Exploits
Exploit ID: CVE-2021-36934
Source: cisa
URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Vulnerable Software (8)
Type: Configuration
Vendor: *
Product: windows_10_1809
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.17763.2114", "vulnerable": true }, { "cpe23uri"...
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.17763.2114", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.18363.1734", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19041.1165", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19042.1165", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19043.1165", "vulnerable": true } ], "operator": "OR"}
Source: nvd
Type: Configuration
Vendor: *
Product: windows_10_1909
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.17763.2114", "vulnerable": true }, { "cpe23uri"...
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.17763.2114", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.18363.1734", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19041.1165", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19042.1165", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19043.1165", "vulnerable": true } ], "operator": "OR"}
Source: nvd
Type: Configuration
Vendor: *
Product: windows_10_2004
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.17763.2114", "vulnerable": true }, { "cpe23uri"...
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.17763.2114", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.18363.1734", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19041.1165", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19042.1165", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19043.1165", "vulnerable": true } ], "operator": "OR"}
Source: nvd
Type: Configuration
Vendor: *
Product: windows_10_20h2
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.17763.2114", "vulnerable": true }, { "cpe23uri"...
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.17763.2114", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.18363.1734", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19041.1165", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19042.1165", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19043.1165", "vulnerable": true } ], "operator": "OR"}
Source: nvd
Type: Configuration
Vendor: *
Product: windows_10_21h1
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.17763.2114", "vulnerable": true }, { "cpe23uri"...
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.17763.2114", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.18363.1734", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19041.1165", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19042.1165", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19043.1165", "vulnerable": true } ], "operator": "OR"}
Source: nvd
Type: Windows KB
Vendor: Microsoft
Product: Windows
Version: 10.0.19043.1165
Operating System: Windows 19043 build 1165
Identifier: KB5005033
Source: msrc
Type: Windows KB
Vendor: Microsoft
Product: Windows
Version: 10.0.18363.1734
Operating System: Windows 18363 build 1734
Identifier: KB5005031
Source: msrc
Type: Windows KB
Vendor: Microsoft
Product: Windows
Version: 10.0.17763.2114
Operating System: Windows 17763 build 2114
Identifier: KB5005030
Source: msrc