synced 11 MIN AGO
01 Record

CVE-2018-8320

A security feature bypass vulnerability exists in DNS Global Blocklist feature, aka "Windows DNS Security Feature Bypass Vulnerability." This affects Windows Server 2012 R2, Windows Server 2008,

UnratedPUBLISHEDCNA: microsoft
CNA base scoreUnratedNo CNA CVSS vector

02 Description

A security feature bypass vulnerability exists in DNS Global Blocklist feature, aka "Windows DNS Security Feature Bypass Vulnerability." This affects Windows Server 2012 R2, Windows Server 2008,

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
4.65% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 91.3% of scored records. A rank, not a probability.
NVD base score
4.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2018-10-10 13:00Z8 YR AGO
Last updated
2024-08-05 06:54Z2 YR AGO
Reserved
2018-03-14
Assigning CNA
microsoft
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
No CWE assigned
Data version
5.1
Document digest
d75f82ae1dd851f7ee8f0f487dbf116ee857407250f2a6d4bfa5035e4c37e6c1

05 Affected products

VendorProductVersionsPlatforms
MicrosoftWindows Server 2012 R2(Server Core installation)—
MicrosoftWindows Server 200832-bit Systems Service Pack 2, 32-bit Systems Service Pack 2 (Server Core installation), Itanium-Based Systems Service Pack 2, x64-based Systems Service Pack 2, x64-based Systems Service Pack 2 (Server Core installation)—
MicrosoftWindows Server 2012(Server Core installation)—
MicrosoftWindows Server 2019(Server Core installation)—
MicrosoftWindows Server 2016(Server Core installation)—
MicrosoftWindows Server 2008 R2Itanium-Based Systems Service Pack 1, x64-based Systems Service Pack 1, x64-based Systems Service Pack 1 (Server Core installation)—
MicrosoftWindows 10Version 1607 for 32-bit Systems, Version 1607 for x64-based Systems, Version 1709 for 32-bit Systems, Version 1709 for x64-based Systems, Version 1803 for 32-bit Systems, Version 1803 for x64-based Systems, Version 1809 for 32-bit Systems, Version 1809 for x64-based Systems—
MicrosoftWindows 10 Serversversion 1709 (Server Core Installation), version 1803 (Server Core Installation)—

06 References