CISA KEVRansomware Use Known

CVE-2021-40449

Microsoft Windows Win32k Privilege Escalation Vulnerability

Unspecified vulnerability allows for an authenticated user to escalate privileges.

VendorMicrosoft

ProductWindows

EPSS74.1%

Added to KEVNov 17, 2021

Remediation DueDec 01, 2021

Known Ransomware UseYes

CWECWE-416

Required Action

Apply updates per vendor instructions.

From Disclosure to Action

Know how quickly you need to move.

For CVE-2021-40449, added to the catalogue on Nov 17, 2021 with a remediation deadline of Dec 01, 2021.

Added to KEVNov 17, 2021

Seraph AlertSame day

Remediation DueDec 01, 2021

ValidationOngoing

Overdue1792 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.