CVE-2018-8320 json
A security feature bypass vulnerability exists in DNS Global Blocklist feature, aka "Windows DNS Security Feature Bypass Vulnerability." Th…
published 2018-10-10 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-19971
- cvss
- 4.3
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 4.7%
- EPSS 4.7% chance of exploitation in 30 days, percentile 91%
- public exploits
- 0
- none known
Summary
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, Windows Server 2012, Windows Server 2019, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.
Patch / fix
Exploit prediction
4.65% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 4.3 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
Affected products
- Microsoft Windows Server 2012 R2
- Microsoft Windows Server 2008
- Microsoft Windows Server 2012
- Microsoft Windows Server 2019
- Microsoft Windows Server 2016
- Microsoft Windows Server 2008 R2
- Microsoft Windows 10
- Microsoft Windows 10 Servers
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2018-8320
patch, vendor-advisory
-
securityfocus.com
/bid/105503
vdb-entry, third-party-advisory
-
securitytracker.com
/id/1041830
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2018-8320
- NVD CVE-2018-8320
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.