CVE-2021-33766 · netVigilance record NV22-0027
Microsoft Exchange Server Information Disclosure
past due
What to do
Apply updates per vendor instructions.
CISA deadline 2022-02-01 · passed 4 years 7 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
Microsoft Exchange Server contains an information disclosure vulnerability which can allow an unauthenticated attacker to steal email traffic from target.
Who is affected
Microsoft Exchange Server. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Weakness class: CWE-287.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 4 years 7 months ago
Sources
- NVD entry for CVE-2021-33766 nvd.nist.gov/vuln/detail/CVE-2021-33766
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2021-33766