Vulnerability Analysis
Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2021-26855
Microsoft Exchange Server Remote Code Execution Vulnerability
CISA KEV
Nuclei Template
SSVC: Active Exploitation
Automatable
CVSS Base Score
9.1
CRITICAL
Exploitability:3.9
Impact Score:5.2
Temporal Score:-
EPSS:100.00%
Threat Intelligence Signals
CISA KEV
YES
KEV Date Added
2021-11-03
Ransomware Use
Known
KEV Due Date
2022-05-03
VulnCheck In-the-Wild
No
Nuclei Template
YES
EPSS Score
99.999%
EPSS Percentile
100.0th pct
GHSA ID
GitHub Severity
CRITICAL
SSVC Exploitation
Active
SSVC Automatable
Yes
Vulnerability Class
—
Identity & Timeline
| Status | - |
| Assigning Authority | - |
| CVSS Version / Source | - |
| Reserved | - |
| Published | - |
| Patch Date (date_public) | - |
| Exploit DB Date | - |
| First GitHub PoC Date | - |
| Last Updated | - |
| Time to Patch (Days to fix) | - |
| Exploit Release Gap | - |
| PoC Release Gap | - |
| Exploit DB References | None identified |
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| No affected products specified. | ||
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