How severe is CVE-2016-3227?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2016-3227 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Microsoft Windows_server_2012

CVE-2016-3227

Use-after-free vulnerability in the DNS Server component in Microsoft Windows Server 2012 Gold and R2 allows remote attackers to execute arbitrary code via crafted requests, aka "Windows DNS Server Use After Free Vulnerability."

EPSS: 0.203 (95.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Microsoft Windows_server_2012 — versions r2
N/a — versions n/a

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

1036095 (vdb-entry, x_refsource_SECTRACK)
MS16-071 (x_refsource_MS, vendor-advisory)

Frequently asked questions

What is CVE-2016-3227?: CVE-2016-3227 is a critical-severity vulnerability in Microsoft Windows_server_2012. CVSS score: 9.8/10. Published 2016-06-16.
How severe is CVE-2016-3227?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2016-3227 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.