What is the CVSS score of CVE-2015-0086?

CVE-2015-0086 has a CVSS 2.0 base score of 9.3 (Critical). CVSS vector: AV:N/AC:M/Au:N/C:C/I:C/A:C. EPSS exploitation probability: 38.2%.

Word CVE-2015-0086

CRITICAL

Resource Management Errors (CWE-399)

2015-03-11 secure@microsoft.com

RCE Buffer Overflow Denial Of Service Microsoft Office Sharepoint Server Word Office Compatibility Pack Word Viewer Office Web Apps Server Web Applications

9.3

CVSS 2.0 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-399
Impact	CVSS score of 9.3 (CRITICAL). Attack characteristics: network attack vector, M complexity. EPSS exploitation probability: 38.23%.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system.

Emergency Immediate action required. Why: CRITICAL + EPSS > 30%, no patch available.

No patch listed yet 38.2% exploitation probability (EPSS)

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AnalysisAI

Microsoft Word 2007 SP3, Office 2010 SP2, Word 2010 SP2, Word 2013 Gold and SP1, Word 2013 RT Gold and SP1, Word Viewer, Office Compatibility Pack SP3, Word Automation Services on SharePoint Server. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable. Epss exploitation probability 38.2% and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-399. Microsoft Word 2007 SP3, Office 2010 SP2, Word 2010 SP2, Word 2013 Gold and SP1, Word 2013 RT Gold and SP1, Word Viewer, Office Compatibility Pack SP3, Word Automation Services on SharePoint Server 2010 SP2, Word Automation Services on SharePoint Server 2013 Gold and SP1, Web Applications 2010 SP2, and Web Apps Server 2013 Gold and SP1 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted RTF document, aka "Microsoft Office Memory Corruption Vulnerability." Affected products include: Microsoft Office, Microsoft Office Compatibility Pack, Microsoft Office Web Apps Server, Microsoft Sharepoint Server, Microsoft Web Applications.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.3 CRITICAL

AV:N/AC:M/Au:N/C:C/I:C/A:C

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Confidentiality

Integrity

Availability

DescriptionCVE.org

Microsoft Word 2007 SP3, Office 2010 SP2, Word 2010 SP2, Word 2013 Gold and SP1, Word 2013 RT Gold and SP1, Word Viewer, Office Compatibility Pack SP3, Word Automation Services on SharePoint Server 2010 SP2, Word Automation Services on SharePoint Server 2013 Gold and SP1, Web Applications 2010 SP2, and Web Apps Server 2013 Gold and SP1 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted RTF document, aka "Microsoft Office Memory Corruption Vulnerability."

Threat Intelligence Overview

EPSS Score

38.2%

Top 3% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity CRITICAL

CISA KEV No

Public POC No

EPSS 38.2%

Patch available No

Active threat No

Deciding rule

CRITICAL + EPSS > 30%, no patch available

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +38

CVSS: +46

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:a:microsoft:office:2010:sp2:*:*:*:*:x64:*

cpe:2.3:a:microsoft:office:2010:sp2:*:*:*:*:x86:*

cpe:2.3:a:microsoft:office_compatibility_pack:*:sp3:*:*:*:*:*:*

cpe:2.3:a:microsoft:office_web_apps_server:2013:*:*:*:gold:*:*:*

cpe:2.3:a:microsoft:office_web_apps_server:2013:sp1:*:*:*:*:*:*

cpe:2.3:a:microsoft:sharepoint_server:2010:sp2:*:*:*:*:*:*

cpe:2.3:a:microsoft:sharepoint_server:2013:-:-:*:gold:*:*:*

cpe:2.3:a:microsoft:sharepoint_server:2013:sp1:*:*:*:*:*:*

cpe:2.3:a:microsoft:web_applications:2010:sp2:*:*:*:*:*:*

cpe:2.3:a:microsoft:word:2007:sp3:*:*:*:*:*:*

cpe:2.3:a:microsoft:word:2010:sp2:*:*:*:*:*:*

cpe:2.3:a:microsoft:word:2013:*:*:*:rt_gold:*:*:*

cpe:2.3:a:microsoft:word:2013:sp1:*:*:*:*:*:*

cpe:2.3:a:microsoft:word_viewer:*:*:*:*:*:*:*:*

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References

Advisories & patches

REF http://www.securitytracker.com/id/1031896 REF https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-022

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