What is the CVSS score of CVE-2017-6381?

CVE-2017-6381 has a CVSS 3.0 base score of 8.1 (High). CVSS vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 3.3%.

Is there a patch available for CVE-2017-6381?

Yes, a patch is available for CVE-2017-6381. Update the affected software to the latest version immediately.

PHP CVE-2017-6381

HIGH

Inclusion of Functionality from Untrusted Control Sphere (CWE-829)

2017-03-16 mlhess@drupal.org

PHP RCE Drupal

8.1

CVSS 3.0 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-829 OWASP Top 10:2025 A08:2025 - Software or Data Integrity Failures ASVS 5.0 V15 - Secure Coding and Architecture Trusted source inclusion only
Impact	CVSS score of 8.1 (HIGH). Attack characteristics: network attack vector, high complexity, no privileges required, no user interaction not required. EPSS exploitation probability: 3.31%.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 3.3% exploitation probability (EPSS)

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AnalysisAI

A 3rd party development library including with Drupal 8 development dependencies is vulnerable to remote code execution. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected Packages

composer drupal/core fix: 8.2.7

composer drupal/drupal fix: 8.2.7

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in composer

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-829. A 3rd party development library including with Drupal 8 development dependencies is vulnerable to remote code execution. This is mitigated by the default .htaccess protection against PHP execution, and the fact that Composer development dependencies aren't normal installed. You might be vulnerable to this if you are running a version of Drupal before 8.2.2. To be sure you aren't vulnerable, you can remove the <siteroot>/vendor/phpunit directory from your production deployments Affected products include: Drupal. Version information: before 8.2.2..

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.1 HIGH

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

A 3rd party development library including with Drupal 8 development dependencies is vulnerable to remote code execution. This is mitigated by the default .htaccess protection against PHP execution, and the fact that Composer development dependencies aren't normal installed. You might be vulnerable to this if you are running a version of Drupal before 8.2.2. To be sure you aren't vulnerable, you can remove the <siteroot>/vendor/phpunit directory from your production deployments

Threat Intelligence Overview

EPSS Score

3.3%

Top 13% 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 HIGH

CISA KEV No

Public POC No

EPSS 3.3%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

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

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +3

CVSS: +40

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

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.

Affected Products (CPE)CVE.org

cpe:2.3:a:drupal:drupal:8.0.0:*:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:alpha10:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:alpha11:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:alpha12:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:alpha13:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:alpha14:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:alpha15:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:alpha2:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:alpha3:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:alpha4:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:alpha5:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:alpha6:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:alpha7:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:alpha8:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:alpha9:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:beta1:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:beta10:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:beta11:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:beta12:*:*:*:*:*:*

cpe:2.3:a:drupal:drupal:8.0.0:beta13:*:*:*:*:*:*

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References

Advisories & patches

ADVISORY https://www.drupal.org/SA-2017-001 REF http://www.securityfocus.com/bid/96919 REF http://www.securitytracker.com/id/1038058

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GitHub PoC

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