CVE-2025-68383

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

State: Published
Severity: 6.5 Medium
Published: Dec 18, 2025
Updated: Dec 19, 2025
Reserved: Dec 16, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	elastic

Weaknesses

CWE-1284 Improper Validation of Specified Quantity in Input

Affected Products

Product	Versions
FilebeatElastic	7.0.0 through 7.17.29Affected 8.0.0 through 8.19.8Affected 9.0.0 through 9.1.8Affected 9.2.0 through 9.2.2Affected

References

https://discuss.elastic.co/t/filebeat-8-19-9-9-1-9-and-9-2-3-security-update-esa-2025-32/384180

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