CVE-2021-33766 — Microsoft Exchange Server Information Disclosure
CVE-2021-33766: Microsoft Exchange Server Information Disclosure
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Microsoft |
| Product | Exchange Server |
| Date added | 2022-01-18 |
| Due date | 2022-02-01 |
| Ransomware campaign use | Unknown |
Description
Microsoft Exchange Server contains an information disclosure vulnerability which can allow an unauthenticated attacker to steal email traffic from target.
Required action (CISA)
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-33766
Weakness behind it
CISA records this vulnerability as an instance of CWE-287. From there the chain continues into CAPEC attack patterns and ATT&CK techniques, all inside this corpus.
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-33766
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
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