CVE-2016-3227
CVE-2016-3227 is a critical-severity vulnerability in Microsoft Windows Server 2012 with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 25% places it in the 98th percentile, indicating an elevated likelihood of exploitation.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 10.0
- EPSS exploit prediction: 25% (98th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Microsoft Windows Server 2012
- Published:
- Last modified:
Description
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."
Frequently asked questions
- What is 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."
- How severe is CVE-2016-3227?
- CVE-2016-3227 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2016-3227 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 25% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2016-3227?
- CVE-2016-3227 primarily affects Microsoft Windows Server 2012. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2016-3227?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2016-3227 published?
- CVE-2016-3227 was published on 2016-06-16 and last updated on 2026-06-17.
References
- http://www.securitytracker.com/id/1036095
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-071
Affected products (4)
- cpe:2.3:o:microsoft:windows_server_2012:-:gold:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:datacenter:*:*:*
- cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:essentials:*:*:*
- cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:standard:*:*:*
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