CVE-2025-68383
mediumpriority · track · 0EPSS 0.002 · 9 %ileEURUUSEPSS · scored 2026-10-26
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (17)
Products and version ranges known to be affected.
- Go github.com/elastic/beats/v7< 7.0.0-alpha2.0.20251204214633-dd3af18220bfosvUSpkg:golang/github.com/elastic/beats/v7
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-2mj3-6grc-px38Filebeat Beats has Buffer Overflow via Malformed Syslog Message or Malicious Tokenizer Pattern in Dissect Configuration2025-12-19ghsa · osvUS
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.
- GO-2025-4252Buffer Overflow via Malformed Syslog Message or Malicious Tokenizer Pattern in github.com/elastic/beats2026-01-23vendor · osvUS
Buffer Overflow via Malformed Syslog Message or Malicious Tokenizer Pattern in github.com/elastic/beats
also known as (6)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (3)
External citations — patches, advisories, analysis.
- https://discuss.elastic.co/t/filebeat-8-19-9-9-1-9-and-9-2-3-security-update-esa-2025-32/384180cnnvd
- https://discuss.elastic.co/t/filebeat-8-19-9-9-1-9-and-9-2-3-security-update-esa-2025-32/384180enisa_euvd
- https://discuss.elastic.co/t/filebeat-8-19-9-9-1-9-and-9-2-3-security-update-esa-2025-32/384180Vendor Advisorynvd
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