Elastic Beats filebeat 7.0.x < 8.19.9 / 9.0.x < 9.1.9 / 9.2.x 9.2.3 Multiple Vulnerabilities

medium Nessus Plugin ID 281874

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Synopsis

Elastic Beats filebeat installed on the remote Windows host is affected by multiple vulnerabilities.

Description

The version of Elastic Beats filebeat installed on the remote host is 7.0.x prior to 8.19.9, 9.0.x prior to 9.1.9, 9.2.x prior to 9.2.3. It is, therefore, affected by multiple vulnerabilities.

- Improper Bounds Check (CWE-787) in Packetbeat can allow a remote unauthenticated attacker to exploit a Buffer Overflow (CAPEC-100) and reliably crash the application or cause significant resource exhaustion via a single crafted UDP packet with an invalid fragment sequence number. (CVE-2025-68381)

- Out-of-bounds read (CWE-125) allows an unauthenticated remote attacker to perform a buffer overflow (CAPEC-100) via the NFS protocol dissector, leading to a denial-of-service (DoS) through a reliable process crash when handling truncated XDR-encoded RPC messages. (CVE-2025-68382)

- 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. (CVE-2025-68383)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Elastic Beats filebeat version 8.19.9, 9.1.9, 9.2.3 or later.

Plugin Details

Severity: Medium

ID: 281874

File Name: elastic_beats_filebeat_9_2_3.nasl

Version: 1.3

Type: local

Agent: windows

Family: Windows

Published: 1/6/2026

Updated: 1/21/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2025-68381

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Vulnerability Information

CPE: x-cpe:/a:elastic:beats_filebeat

Required KB Items: installed_sw/Beats filebeat, SMB/Registry/Enumerated

Patch Publication Date: 12/18/2025

Vulnerability Publication Date: 12/18/2025

Reference Information

CVE: CVE-2025-68381, CVE-2025-68382, CVE-2025-68383, CVE-2025-68388

IAVA: 2026-A-0006-S

Detections

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