Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2021-26887 | First vendor Publication | 2021-03-11 |
| Vendor | Cve | Last vendor Modification | 2023-12-29 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | |||
|---|---|---|---|
| Overall CVSS Score | 7.8 | ||
| Base Score | 7.8 | Environmental Score | 7.8 |
| impact SubScore | 5.9 | Temporal Score | 7.8 |
| Exploitabality Sub Score | 1.8 | ||
| Attack Vector | Local | Attack Complexity | Low |
| Privileges Required | Low | User Interaction | None |
| Scope | Unchanged | Confidentiality Impact | High |
| Integrity Impact | High | Availability Impact | High |
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:L/AC:L/Au:N/C:P/I:P/A:P) | |||
|---|---|---|---|
| Cvss Base Score | 4.6 | Attack Range | Local |
| Cvss Impact Score | 6.4 | Attack Complexity | Low |
| Cvss Expoit Score | 3.9 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| An elevation of privilege vulnerability exists in Microsoft Windows when Folder redirection has been enabled via Group Policy. When folder redirection file server is co-located with Terminal server, an attacker who successfully exploited the vulnerability would be able to begin redirecting another user's personal data to a created folder. To exploit the vulnerability, an attacker can create a new folder under the Folder Redirection root path and create a junction on a newly created User folder. When the new user logs in, Folder Redirection would start redirecting to the folder and copying personal data. This elevation of privilege vulnerability can only be addressed by reconfiguring Folder Redirection with Offline files and restricting permissions, and NOT via a security update for affected Windows Servers. See the FAQ section of this CVE for configuration guidance. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26887 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-59 | Improper Link Resolution Before File Access ('Link Following') |
CPE : Common Platform Enumeration
| Type | Description | Count |
|---|---|---|
| Os | 1 | |
| Os | 1 | |
| Os | 1 | |
| Os | 1 | |
| Os | 1 | |
| Os | 1 | |
| Os | 1 | |
| Os | 1 | |
| Os | 1 | |
| Os | 1 | |
| Os | 1 | |
| Os | 1 | |
| Os | 2 | |
| Os | 2 | |
| Os | 1 | |
| Os | 1 | |
| Os | 1 |
Sources (Detail)
| Source | Url |
|---|---|
| MISC | https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-2... |
Alert History
| Date | Informations |
|---|---|
| 2024-02-02 02:23:51 |
|
| 2024-02-01 12:23:17 |
|
| 2023-12-30 00:27:54 |
|
| 2023-09-05 13:18:09 |
|
| 2023-09-05 01:22:51 |
|
| 2023-09-02 13:16:48 |
|
| 2023-09-02 01:23:11 |
|
| 2023-08-12 13:22:47 |
|
| 2023-08-12 01:22:23 |
|
| 2023-08-11 13:15:11 |
|
| 2023-08-11 01:23:06 |
|
| 2023-08-06 13:13:13 |
|
| 2023-08-06 01:22:07 |
|
| 2023-08-04 13:13:35 |
|
| 2023-08-04 01:22:29 |
|
| 2023-07-14 13:13:37 |
|
| 2023-07-14 01:22:18 |
|
| 2023-03-29 02:15:53 |
|
| 2023-03-28 12:22:32 |
|
| 2022-12-03 13:01:10 |
|
| 2022-05-04 17:23:17 |
|
| 2021-05-04 14:08:07 |
|
| 2021-04-22 03:13:16 |
|
| 2021-03-26 12:38:23 |
|
