CVE-2021-42321High· 8.8▾ Abyssal⚠ Exploited in the wildPoC availableMicrosoft Exchange Server Remote Code Execution Vulnerability
▾ Abyssal zone — Critical with a public exploit or in-the-wild use
impact 48.4 · likelihood 18.3 · exploitation 25 · ransomware 5
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 2 sources. Availability, not in-the-wild use.
Exploit-prediction probability, daily snapshots since Aug 20.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Federal remediation due Dec 1, 2021
Last analysed / modified upstream
92%
3 GitHub repos · Metasploit ×1
Added to the CISA catalog on Nov 17, 2021. Federal remediation due Dec 1, 2021. View catalog ↗
Microsoft Exchange Server Remote Code Execution Vulnerability
exchange_server = 2016exchange_server = 2019Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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