CVE-2021-34473Critical· 9.1▾ Hadal⚠ Exploited in the wild0dayPoC availableMicrosoft Exchange Server Remote Code Execution Vulnerability
▾ Hadal zone — Critical and actively exploited (CISA KEV / 0day)
impact 50.1 · likelihood 20 · exploitation 25 · ransomware 5
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 3 sources. Availability, not in-the-wild use.
Exploit-prediction probability, daily snapshots since Aug 10.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Federal remediation due Nov 17, 2021
Last analysed / modified upstream
100%
9 GitHub repos · Metasploit ×1 · Nuclei ×1
Added to the CISA catalog on Nov 3, 2021. Federal remediation due Nov 17, 2021. View catalog ↗
Microsoft Exchange Server Remote Code Execution Vulnerability
exchange_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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