What is the CVSS score of CVE-2015-1427?

CVE-2015-1427 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 92.3%.

Is there a public PoC exploit available for CVE-2015-1427?

Yes, a public proof-of-concept exploit is available for CVE-2015-1427. Prioritise patching immediately. EPSS: 92.3%.

Is there a patch available for CVE-2015-1427?

Yes, a patch is available for CVE-2015-1427. Update the affected software to the latest version immediately.

Elasticsearch CVE-2015-1427

CRITICAL

2015-02-17 cve@mitre.org

Authentication Bypass Red Hat Elastic Fuse Elasticsearch

9.8

CVSS 3.1 · NVD

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Vulnerability Assessment

Impact	CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. CISA has confirmed active exploitation in the wild. Public proof-of-concept exploit code is available. EPSS exploitation probability: 92.33%.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system.

Act Now Prioritize within 24-48h. Why: In CISA KEV with patch available.

Exploited in the wild (CISA KEV) Patch available 92.3% exploitation probability (EPSS)

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AnalysisAI

The Groovy scripting engine in Elasticsearch before 1.3.8 and 1.4.x before 1.4.3 allows remote attackers to bypass the sandbox protection mechanism and execute arbitrary shell commands via a crafted. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Actively exploited in the wild (cisa kev) and public exploit code available.

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

maven org.elasticsearch:elasticsearch fix: 1.3.8, 1.4.3

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in maven

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

Technical ContextAI · show details

The Groovy scripting engine in Elasticsearch before 1.3.8 and 1.4.x before 1.4.3 allows remote attackers to bypass the sandbox protection mechanism and execute arbitrary shell commands via a crafted script. Affected products include: Elastic Elasticsearch, Redhat Fuse. Version information: before 1.3.8.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.8 CRITICAL

AV:N/AC:L/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

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Added to CISA KEV

Apr 21, 2026 - 15:31 CISA

CVE Published

Feb 17, 2015 - 15:59 cve.org

CRITICAL 9.8

DescriptionCVE.org

Threat Intelligence Overview

Threat Score

7.7/10

Composite threat intelligence

EPSS Score

92.3%

Top 0% exploitable

Exploit

POC

Public exploit code exists

Data Quality

7 sources

Confidence: High

NVD

CVE.org

CISA KEV

EPSS POC (2)

Exploit-DB

VulDB

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 Yes

Public POC Yes

EPSS 92.3%

Patch available Yes

Active threat Yes

Deciding rule

In CISA KEV with 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

Immediate

Exploitation· derived

Active

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact· derived

High

Priority Score

226

Low Medium High Critical

KEV: +50

EPSS: +92

CVSS: +49

PoC: +20

Weaponized: +15

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)CVE.org

cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*

cpe:2.3:a:redhat:fuse:1.0.0:*:*:*:*:*:*:*

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References

Advisories & patches

PATCH http://www.elasticsearch.com/blog/elasticsearch-1-4-3-1-3-8-released/ ADVISORY https://vuldb.com/vuln/74222 ADVISORY https://www.elastic.co/community/security/ REF http://packetstormsecurity.com/files/130368/Elasticsearch-1.3.7-1.4.2-Sandbox-Escape-Command-Execution.html REF http://www.securityfocus.com/archive/1/534689/100/0/threaded REF http://www.securityfocus.com/bid/72585 REF https://access.redhat.com/errata/RHSA-2017:0868 REF https://exchange.xforce.ibmcloud.com/vulnerabilities/100850 REF https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1427

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