Microsoft Windows Server 2003 SP2, Server 2008 SP2 and R2 SP1, and Server 2012 Gold and R2 allow remote attackers to cause a denial of service (system hang and RADIUS outage) via crafted username strings to (1) Internet Authentication Service (IAS) or (2) Network Policy Server (NPS), aka "Network Policy Server RADIUS Implementation Denial of Service Vulnerability."
CVE-2015-0015
This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 7.8 — v2 rates that HIGH (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:N/I:N/A:C. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 78.7% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.
- High exploitation likelihood — EPSS 79%
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v2.0 (legacy)
- 7.8HIGHNVD never assigned a CVSS v3 rating to this CVE
- EG Score
- 7.8(low)
- EG Risk
- 71(Track)EG Risk 71/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity78% × 45%Exploitation79% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 79%
- EPSS %ILE
- 100%
- KEV
- Not listed
Published
January 13, 2015
Last Modified
May 6, 2026
References (8)
- secure@microsofthttp://secunia.com/advisories/62148
- secure@microsofthttp://www.securityfocus.com/bid/71933
- secure@microsofthttp://www.securitytracker.com/id/1031532
- secure@microsofthttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-007
- af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/62148
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/71933
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1031532
- af854a3a-2127-422b-91ae-364da2661108https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-007
Data Freshness Timeline
(refreshed 5× in last 7d / 14× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-08-21 23:44 UTCEPSS rescore
- 2026-08-19 16:59 UTCEPSS rescore
- 2026-08-16 14:51 UTCEPSS rescore
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- 2026-07-28 15:31 UTCEPSS rescore
- 2026-07-26 14:50 UTCEPSS rescore
- 2026-07-26 13:52 UTCEG score recompute▲ 7.80
- 2026-07-24 14:13 UTCEPSS rescore
- 2026-07-23 01:15 UTCEG score recompute▼ 8.00
- 2026-07-23 00:18 UTCEG score recompute▲ 8.00
- 2026-07-22 21:57 UTCEG score recompute
- 2026-07-22 14:04 UTCEPSS rescore
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- 2026-07-09 19:05 UTCEPSS rescore
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- 2026-05-31 00:14 UTCEPSS rescore
- 2026-05-29 13:41 UTCEPSS rescore
- 2026-05-28 14:06 UTCEG score recompute
- 2026-05-28 14:06 UTCGHSA enrichment
- 2026-05-28 13:42 UTCEPSS rescore
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- 2026-05-26 07:16 UTCEPSS rescore
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- 2026-05-23 15:10 UTCEPSS rescore
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- 2026-05-18 21:30 UTCEPSS rescore
- 2026-05-18 21:30 UTCEPSS rescore
Frequently asked(4)
What is CVE-2015-0015?
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How do I remediate CVE-2015-0015?
Dependency Blast Radius
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