CVE-2021-26857High· 7.8▾ Abyssal⚠ Exploited in the wild0dayPoC availableMicrosoft Exchange Server Remote Code Execution Vulnerability
▾ Abyssal zone — Critical with a public exploit or in-the-wild use
impact 42.9 · likelihood 19.2 · exploitation 25 · ransomware 5
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Exploit-prediction probability, daily snapshots since Aug 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Federal remediation due May 3, 2022
Last analysed / modified upstream
94%
94% → 96%
1 GitHub repo
Added to the CISA catalog on Nov 3, 2021. Federal remediation due May 3, 2022. View catalog ↗
Microsoft Exchange Server Remote Code Execution Vulnerability
exchange_server = 2010exchange_server = 2013exchange_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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