CVE-2025-68383 MEDIUM

CVE-2025-68383: Filebeat Improper Validation of Specified Index, Position, or Offset in Input

Vendor Elastic
Product Filebeat
Weakness CWE-1284
Published December 18, 2025
Last update December 19, 2025

CVSS base score

6.5/10
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Improper Validation of Specified Index, Position, or Offset in Input (CWE-1285) in Filebeat Syslog parser and the Libbeat Dissect processor can allow a user to trigger a Buffer Overflow (CAPEC-100) and cause a denial of service (panic/crash) of the Filebeat process via either a malformed Syslog message or a malicious tokenizer pattern in the Dissect configuration.

Key dates

02Disclosure timeline

December 18, 2025 CVE published
December 19, 2025 Record updated