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

> CVE-2025-68383: Filebeat Improper Validation of Specified Index, Position, or Offset in Input. CVSS 6.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-68383
Last updated: 2026-06-17T09:59:02Z

- Published: 2025-12-18 22:00 UTC · Updated: 2026-06-17 09:59 UTC · Assigner: elastic
- CVSS: 6.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.19%, 9th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-1284

## 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.

## Affected vendors and products

- Elastic: Filebeat

## Tracked companies

- [Elastic Cloud](https://rewindex.com/company/elastic-cloud.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-68383)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-68383)
- [https://discuss.elastic.co/t/filebeat-8-19-9-9-1-9-and-9-2-3-security-update-esa-2025-32/384180](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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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-68383 · Markdown: https://rewindex.com/cve/CVE-2025-68383.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-68383 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:16:26.774Z