What is the CVSS score of CVE-2015-6369?

CVE-2015-6369 has a CVSS 2.0 base score of 4.9 (Medium). CVSS vector: AV:L/AC:L/Au:N/C:N/I:N/A:C. EPSS exploitation probability: 0.1%.

Firepower Extensible Operating System CVE-2015-6369

MEDIUM

Improper Input Validation (CWE-20)

2015-11-19 psirt@cisco.com

Denial Of Service Cisco Firepower Extensible Operating System

4.9

CVSS 2.0 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-20 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V2 - Validation and Business Logic Input validation, allowlisting
Impact	CVSS score of 4.9 (MEDIUM). Attack characteristics: local attack vector, low complexity. EPSS exploitation probability: 0.10%.
Exploit ScenarioDerived	Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAI

The USB driver in Cisco Firepower Extensible Operating System 1.1(1.160) on Firepower 9000 devices allows physically proximate attackers to cause a denial of service via a crafted USB device that. Rated medium severity (CVSS 4.9), this vulnerability is low attack complexity. 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.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified under CWE-20. The USB driver in Cisco Firepower Extensible Operating System 1.1(1.160) on Firepower 9000 devices allows physically proximate attackers to cause a denial of service via a crafted USB device that triggers invalid USB commands, aka Bug ID CSCux10531. Affected products include: Cisco Firepower Extensible Operating System.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 4.9 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Confidentiality

None

Integrity

None

Availability

DescriptionCVE.org

The USB driver in Cisco Firepower Extensible Operating System 1.1(1.160) on Firepower 9000 devices allows physically proximate attackers to cause a denial of service via a crafted USB device that triggers invalid USB commands, aka Bug ID CSCux10531.

Threat Intelligence Overview

EPSS Score

0.1%

Top 74% 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 MEDIUM

CISA KEV No

Public POC No

EPSS 0.1%

Patch available No

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

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

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +24

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

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:o:cisco:firepower_extensible_operating_system:1.1\(1.160\):*:*:*:*:*:*:*

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References

Advisories & patches

ADVISORY http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151116-fire

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

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