Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since November 3, 2021.
CVE-2021-27065
Microsoft Exchange Server Remote Code Execution Vulnerability
Added to KEV November 3, 2021
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2021-27065
- CWE
- CWE-39
- Affected products
- Exchange Server · Microsoft Exchange Server · Microsoft
What happened
Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution. This vulnerability is part of the ProxyLogon exploit chain.
What it means for your business
Microsoft Exchange Server is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2021-27065). Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution. This vulnerability is part of the ProxyLogon exploit chain. CISA remediation due date: 2022-05-03. If you need help checking exposure, call (864) 335-9223.
Required action
Apply updates per vendor instructions.
CISA due date: May 3, 2022
Sources
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