CVE-2025-68383

Filebeat Improper Validation of Specified Index, Position, or Offset in Input

Published Dec 18, 2025 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-2mj3-6grc-px38 Filebeat Beats has Buffer Overflow via Malformed Syslog Message or Malicious Tokenizer Pattern in Dissect Configuration
History
Type Values Removed Values Added
CPEs cpe:2.3:a:elastic:filebeat:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Elastic
Elastic filebeat
Vendors & Products Elastic
Elastic filebeat
Type Values Removed Values Added
Description 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.
Title Filebeat Improper Validation of Specified Index, Position, or Offset in Input
Weaknesses CWE-1284
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
elastic
Published
Updated
Dec 19, 2025, 3:15 PM
Reserved
Dec 16, 2025, 5:26 PM
Status
Analyzed
Published
Dec 18, 2025, 10:16 PM
Modified
Jun 17, 2026, 9:59 AM