CISA KEVRansomware Use Known

CVE-2021-31207

Microsoft Exchange Server Security Feature Bypass Vulnerability

Microsoft Exchange Server contains an unspecified vulnerability that allows for security feature bypass.

VendorMicrosoft

ProductExchange Server

EPSS99.8%

Added to KEVNov 03, 2021

Remediation DueNov 17, 2021

Known Ransomware UseYes

CWECWE-20, CWE-434

Required Action

Apply updates per vendor instructions.

From Disclosure to Action

Know how quickly you need to move.

For CVE-2021-31207, 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.

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