How severe is CVE-2015-1427?

CVE-2015-1427 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2015-1427?

Affected package information for CVE-2015-1427 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2015-1427?

No fixed version has been published for CVE-2015-1427 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2015-1427 actively exploited in the wild?

Yes. There are 7 known exploit references for CVE-2015-1427, including 2 documented proof-of-concept exploits on Exploit-DB and 4 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2015-1427?

CVE-2015-1427 has an EPSS (Exploit Prediction Scoring System) score of 92.3%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2015-1427 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2015-1427 (Elasticsearch Groovy Scripting Engine Remote Code Execution Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2022-03-25. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-04-15. The required action was: Apply updates per vendor instructions. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

Which products and versions are affected by CVE-2015-1427?

CVE-2015-1427 affects elastic elasticsearch; redhat fuse (1 version, e.g. 1.0.0). Check the affected-products list on this page against your deployed version to confirm exposure.

Is there exploit tooling available for CVE-2015-1427?

A Nuclei detection template exists for CVE-2015-1427, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2015-1427 published, and has it been updated?

CVE-2015-1427 was published on February 17, 2015 and was last updated on April 22, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2022-03-25 — agencies required to remediate by 2022-04-15

CVE-2015-1427

CRITICAL

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…

Published

Feb 17, 2015

Updated

Apr 22, 2026

Affected

0 pkgs

Patched

None yet

Exploits

7 known

EPSS Exploitation Probability

via FIRST.org ↗

92.3%probability of exploitation in next 30 days

Very High Risk100th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

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

2 products · 3 configurations

Application

elasticsearchelastic

≥ 1.4.0 && < 1.4.3

range

Application

fuseredhat

1 version

1.0.0

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-36337remotelinux✓ Verified

ElasticSearch - Remote Code Execution

by Xiphos Research Ltd · Mar 11, 2015

Exploit-DB Source

EDB-36415remotejava✓ Verified

ElasticSearch - Search Groovy Sandbox Bypass (Metasploit)

by Metasploit · Mar 16, 2015

Exploit-DB Source

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2015-1427 in your stack?

O3 detects CVE-2015-1427 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my stack How O3 SCA works

CVSS Score

9.8/10

CVSS v3 base score

Vector breakdown

AV:Attack Vector

Network

AC:Attack Complexity

Low

PR:Privileges Required

None

UI:User Interaction

None

S:Scope

Unchanged

C:Confidentiality

High

I:Integrity

High

A:Availability

High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaponization

Timeline

Disclosed

Feb 17, 2015

First exploit

Mar 11, 2015

KEV added

Mar 25, 2022

Last updated

Apr 22, 2026

Identifiers

CVE-2015-1427

References

Advisorypacketstormsecurity.com Advisorysecurityfocus.com Advisorysecurityfocus.com Advisoryaccess.redhat.com Advisoryexchange.xforce.ibmcloud.com Advisoryelastic.co Advisorypacketstormsecurity.com Advisorysecurityfocus.com Advisorysecurityfocus.com Advisoryaccess.redhat.com Advisoryexchange.xforce.ibmcloud.com Advisoryelastic.co Fixelasticsearch.com Fixelasticsearch.com Exploit / PoCpacketstormsecurity.com Exploit / PoCpacketstormsecurity.com Webcisa.gov

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