Microsoft Exchange Server Information Disclosure

Microsoft Exchange Server contains an information disclosure vulnerability which can allow an unauthenticated attacker to steal email traffic from target.

cat cve-2021-33766.json

Vendor: Microsoft
Product: Exchange Server
CVSS: 7.3
EPSS (exploit probability): 98.2%
Status: kev
CISA patch-by (BOD 22-01): February 1, 2022
Published: January 18, 2022
Source: https://nvd.nist.gov/vuln/detail/CVE-2021-33766

Microsoft Exchange Server contains an information disclosure vulnerability which can allow an unauthenticated attacker to steal email traffic from target.

Added to CISA’s Known Exploited Vulnerabilities catalog on 2022-01-18. Required action per CISA: Apply updates per vendor instructions. Due date: 2022-02-01.

This is an auto-synced KEV catalog record pending a full 0dayNews write-up — see CISA’s KEV catalog and the NVD record linked above for primary sources.