What is CVE-2016-0050?

CVE-2016-0050 is a medium-severity vulnerability in Microsoft Windows Server 2008, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2016-02-10.

How severe is CVE-2016-0050?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Improper input validation in Microsoft Windows Server 2008

CVE-2016-0050

Network Policy Server (NPS) in Microsoft Windows Server 2008 SP2 and R2 SP1 and Server 2012 Gold and R2 misparses username queries, which allows remote attackers to cause a denial of service (RADIUS authentication outage) via crafted requests, aka "Network Policy Server RADIUS Implementation Denial of Service Vulnerability."

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2016-02-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.179 (97.1th percentile), scored 2026-09-28.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.179 · newest: 0.179 · change: 0.000

Affected products

Microsoft Windows Server 2008 — versions r2
Microsoft Windows Server 2012 — versions r2

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.securitytracker.com/id/1034986 (vdb-entry)
docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-021 (vendor-advisory)

Frequently asked questions

What is CVE-2016-0050?: CVE-2016-0050 is a medium-severity vulnerability in Microsoft Windows Server 2008, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2016-02-10.
How severe is CVE-2016-0050?: Medium severity. CVSS v3 base score is 5.3 out of 10.