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."
Published Feb 10, 2016
5.3
MEDIUMCVSS 3.0
EPSS 17.88%
Description
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."
Affected products
No data.
- n/a
- r2
- n/a
- r2
- r2
- r2
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (30 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 17.88% (0.17879) | 97.09th | v5 (v2026.06.15) |
| Sep 22, 2026 | 17.88% (0.17879) | 97.04th | v5 (v2026.06.15) |
| Sep 21, 2026 | 16.08% (0.16077) | 96.82th | v5 (v2026.06.15) |
| Sep 6, 2026 | 17.88% (0.17879) | 96.97th | v5 (v2026.06.15) |
| Sep 5, 2026 | 16.08% (0.16077) | 96.76th | v5 (v2026.06.15) |
| Aug 30, 2026 | 17.88% (0.17879) | 96.96th | v5 (v2026.06.15) |
| Aug 28, 2026 | 16.08% (0.16077) | 96.74th | v5 (v2026.06.15) |
| Aug 26, 2026 | 17.88% (0.17879) | 96.95th | v5 (v2026.06.15) |
| Aug 24, 2026 | 20.66% (0.20659) | 97.33th | v5 (v2026.06.15) |
| Aug 23, 2026 | 18.60% (0.18602) | 97.11th | v5 (v2026.06.15) |
| Jun 15, 2026 | 20.66% (0.20659) | 97.19th | v5 (v2026.06.15) |
| May 19, 2026 | 47.61% (0.47607) | 97.74th | v4 (v2025.03.14) |
| Jul 8, 2025 | 53.17% (0.53172) | 97.82th | v4 (v2025.03.14) |
| Mar 30, 2025 | 51.37% (0.51372) | 97.66th | v4 (v2025.03.14) |
| Mar 29, 2025 | 57.67% (0.57669) | 97.36th | v4 (v2025.03.14) |
| Mar 17, 2025 | 51.37% (0.51372) | 97.62th | v4 (v2025.03.14) |
| Mar 6, 2025 | 95.18% (0.95181) | 99.52th | v3 (v2023.03.01) |
| Dec 12, 2024 | 94.11% (0.94107) | 99.28th | v3 (v2023.03.01) |
| Jun 15, 2024 | 94.89% (0.94888) | 99.30th | v3 (v2023.03.01) |
| Apr 9, 2024 | 95.22% (0.95216) | 99.30th | v3 (v2023.03.01) |
| Mar 11, 2024 | 95.69% (0.95692) | 99.36th | v3 (v2023.03.01) |
| Dec 3, 2023 | 96.61% (0.96608) | 99.52th | v3 (v2023.03.01) |
| Oct 31, 2023 | 96.80% (0.96799) | 99.56th | v3 (v2023.03.01) |
| Sep 28, 2023 | 96.90% (0.96903) | 99.61th | v3 (v2023.03.01) |
| Aug 25, 2023 | 96.86% (0.96865) | 99.57th | v3 (v2023.03.01) |
| Jun 19, 2023 | 96.95% (0.96953) | 99.57th | v3 (v2023.03.01) |
| Mar 7, 2023 | 96.98% (0.96979) | 99.51th | v3 (v2023.03.01) |
| Mar 6, 2023 | 35.05% (0.35047) | 97.80th | v2 (v2022.01.01) |
| Dec 14, 2022 | 35.05% (0.35047) | 97.77th | v2 (v2022.01.01) |
| Feb 4, 2022 | 33.50% (0.33498) | 96.61th | v2 (v2022.01.01) |
References (2)
- http://www.securitytracker.com/id/1034986 vdb-entryx_refsource_SECTRACK
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-021 vendor-advisoryx_refsource_MS
| Link | Providers | Tags |
|---|---|---|
| http://www.securitytracker.com/id/1034986 | vdb-entryx_refsource_SECTRACK | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-021 | vendor-advisoryx_refsource_MS |
Change history (0)
No recorded changes yet.