Elastic Elasticsearch up to 7.17.29/8.19.7/9.1.7/9.2.1 PKI Realm improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Elastic Elasticsearch up to 7.17.29/8.19.7/9.1.7/9.2.1. Affected by this vulnerability is an unknown functionality of the component PKI Realm. This manipulation causes improper authentication. This vulnerability is tracked as CVE-2025-37731. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability classified as critical was found in Elastic Elasticsearch up to 7.17.29/8.19.7/9.1.7/9.2.1. Affected by this vulnerability is some unknown functionality of the component PKI Realm. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Improper Authentication in Elasticsearch PKI realm can lead to user impersonation via specially crafted client certificates. A malicious actor would need to have such a crafted client certificate signed by a legitimate, trusted Certificate Authority.

The advisory is shared at discuss.elastic.co. This vulnerability is known as CVE-2025-37731 since 04/16/2025. The exploitation appears to be difficult. The attack can be launched remotely. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 279410 (Elasticsearch 7.0.x < 8.19.8 / 9.0.x < 9.1.8 / 9.2.x < 9.2.2 (ESA-2025-27)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (279410), EUVD (EUVD-2025-203360) and CERT Bund (WID-SEC-2025-2841). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Open Source Elasticsearch

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 5.0
VulDB Temp Score: 5.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.8
CNA Vector (elastic): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 279410
Nessus Name: Elasticsearch 7.0.x < 8.19.8 / 9.0.x < 9.1.8 / 9.2.x < 9.2.2 (ESA-2025-27)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/16/2025 CVE reserved
12/15/2025 +243 days Advisory disclosed
12/15/2025 +0 days VulDB entry created
12/20/2025 +5 days VulDB entry last update

Sourcesinfo

Advisory: discuss.elastic.co
Status: Confirmed

CVE: CVE-2025-37731 (🔒)
GCVE (CVE): GCVE-0-2025-37731
GCVE (VulDB): GCVE-100-336457
EUVD: 🔒
CERT Bund: WID-SEC-2025-2841 - Elasticsearch: Schwachstelle erm&ouml;glicht Umgehen von Sicherheitsvorkehrungen

Entryinfo

Created: 12/15/2025 12:24
Updated: 12/20/2025 02:17
Changes: 12/15/2025 12:24 (62), 12/15/2025 13:13 (1), 12/15/2025 15:58 (7), 12/20/2025 02:17 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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