Attacker Value
High
CVE-2021-33766 ProxyToken
CVE-2021-33766 ProxyToken
(Last updated December 29, 2023) ▾
MITRE ATT&CK
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3
Technical Analysis
An unauthenticated actor can perform configuration actions on mailboxes belonging to arbitrary users. Which can be used to copy all emails addressed to a target and account and forward them to an account controlled by the threat actor.
CVSS V3 Severity and Metrics
Data provided by the National Vulnerability Database (NVD)
Base Score:
7.3 High
Impact Score:
3.4
Exploitability Score:
3.9
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
Low
Integrity (I):
Low
Availability (A):
Low
General Information
Vendors
- microsoft
Products
- exchange server 2013,
- exchange server 2016,
- exchange server 2019
Exploited in the Wild
