CVE-2021-26855 — Actively Exploited: Exchange Server (Microsoft)
Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution. This vulnerability is part of the ProxyLogon exploit chain.
| CVE ID | CVE-2021-26855 |
|---|---|
| Vendor | Microsoft |
| Product | Exchange Server |
| Vulnerability name | Microsoft Exchange Server Remote Code Execution Vulnerability |
| Date added | 2021-11-03 |
| Remediation due | 2022-05-03 |
| Known ransomware use | Known |
| Required action | Apply updates per vendor instructions. |
| Description | Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution. This vulnerability is part of the ProxyLogon exploit chain. |
| Source | CISA Known Exploited Vulnerabilities |
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