CISA KEVRansomware Use Known

CVE-2021-34473

Microsoft Exchange Server Remote Code Execution Vulnerability

Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution.

VendorMicrosoft

ProductExchange Server

EPSS100.0%

Added to KEVNov 03, 2021

Remediation DueNov 17, 2021

Known Ransomware UseYes

CWECWE-918

Required Action

Apply updates per vendor instructions.

From Disclosure to Action

Know how quickly you need to move.

For CVE-2021-34473, added to the catalogue on Nov 03, 2021 with a remediation deadline of Nov 17, 2021.

Added to KEVNov 03, 2021

Seraph AlertSame day

Remediation DueNov 17, 2021

ValidationOngoing

Overdue1806 days overdue

Recommended action: Apply vendor remediation guidance.

Available for technologies you monitor inside Seraph CTI.

Surfaced automatically when a tracked actor is linked to this CVE.

Shown when this vendor/product is relevant to your industry.

Campaign and indicator context, where Seraph analysts have published it.

Declare your technology stack inside Seraph CTI and get notified the moment a KEV entry matches it.