CVE-2021-26866
CVSS V2 Low 3.6
CVSS V3 Medium 6.1
Description
Windows Update Service Elevation of Privilege Vulnerability
Overview
- CVE ID
- CVE-2021-26866
- Assigner
- secure@microsoft.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-03-11T16:15:14
- Last Modified Date
- 2022-05-03T16:04:40
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:microsoft:windows_server_2016:20h2:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:L/Au:N/C:N/I:P/A:P
- Access Vector
- LOCAL
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 3.6
- Severity
- LOW
- Exploitability Score
- 3.9
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 6.1
- Base Severity
- MEDIUM
- Exploitability Score
- 1.8
- Impact Score
- 4.2
References
| Reference URL | Reference Tags |
|---|---|
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26866 | Patch Vendor Advisory |
| https://www.zerodayinitiative.com/advisories/ZDI-21-286/ | Third Party Advisory VDB Entry |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-26866 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26866 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-08 06:19:36 | Added to TrackCVE | |||
| 2022-12-05 23:33:41 | 2021-03-11T16:15Z | 2021-03-11T16:15:14 | CVE Published Date | updated |
| 2022-12-05 23:33:41 | 2022-05-03T16:04:40 | CVE Modified Date | updated | |
| 2022-12-05 23:33:41 | Analyzed | Vulnerability Status | updated |