CVE-2025-68383

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

MEDIUM
6.5
CVSS Score
Published: December 18, 2025 at 10:00 PM UTC
Updated: June 17, 2026 at 09:59 AM UTC
1 product affected across 1 vendorFilebeat

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Filebeat· Elasticelastic-plugin
95%
7.0.0 ≤ v ≤ 7.17.298.0.0 ≤ v ≤ 8.19.88.0.0 ≤ v < 8.19.99.0.0 ≤ v ≤ 9.1.89.0.0 ≤ v < 9.1.99.2.0 ≤ v ≤ 9.2.29.2.0 ≤ v < 9.2.37.0.08.0.09.0.09.2.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMelastic
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-1284

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