#VU119962 Improper authentication in Elasticsearch - CVE-2025-37731
Published: December 15, 2025
Vulnerability identifier: #VU119962
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-37731
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Elasticsearch
Elasticsearch
Software vendor:
Elastic Stack
Elastic Stack
Description
The vulnerability allows a remote user to bypass authentication process.
The vulnerability exists due to an error in Elasticsearch PKI realm when handling client certificates. A remote user can use a specially crafted certificate to impersonate other application users.
Remediation
Install updates from vendor's website.