CVE-2021-34470
Microsoft Exchange Server Elevation of Privilege Vulnerability
Severity Score
8.0
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
2
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Attend
*SSVC
Descriptions
Microsoft Exchange Server Elevation of Privilege Vulnerability
Una vulnerabilidad de Elevación de Privilegios de Microsoft Exchange Server. Este ID de CVE es diferente de CVE-2021-33768, CVE-2021-34523
The msExchStorageGroup schema class added during Exchange installation can be used to create almost any AD object including users, groups or domain trusts leading to elevation of privilege.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Attend
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-06-09 CVE Reserved
- 2021-07-14 CVE Published
- 2021-07-29 First Exploit
- 2024-08-23 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
CAPEC
References (4)
| URL | Tag | Source |
|---|---|---|
| http://packetstormsecurity.com/files/163706/Microsoft-Exchange-AD-Schema-Misconfiguration-Privilege-Escalation.html | Third Party Advisory |
|
| URL | Date | SRC |
|---|---|---|
| https://packetstorm.news/files/id/163706 | 2021-07-29 | |
| https://github.com/technion/CVE-2021-34470scanner | 2022-08-18 |
| URL | Date | SRC |
|---|---|---|
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34470 | 2023-12-28 |
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Microsoft Search vendor "Microsoft" | Exchange Server Search vendor "Microsoft" for product "Exchange Server" | 2013 Search vendor "Microsoft" for product "Exchange Server" and version "2013" | cumulative_update_23 |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Exchange Server Search vendor "Microsoft" for product "Exchange Server" | 2016 Search vendor "Microsoft" for product "Exchange Server" and version "2016" | cumulative_update_21 |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Exchange Server Search vendor "Microsoft" for product "Exchange Server" | 2019 Search vendor "Microsoft" for product "Exchange Server" and version "2019" | cumulative_update_10 |
Affected
| ||||||