CVE-2026-26933CWE-129

Improper Validation of Array Index in Packetbeat Leading to Denial of Service

Medium · published March 19, 2026

CVSS v3.1
5.7
EPSS
0%
Percentile
22.1
In the wild
Unconfirmed
What it is

Improper Validation of Array Index (CWE-129) in multiple protocol parser components in Packetbeat can lead Denial of Service via Input Data Manipulation (CAPEC-153). An attacker with the ability to send specially crafted, malformed network packets to a monitored network interface can trigger out-of-bounds read operations, resulting in application crashes or resource exhaustion. This requires the attacker to be positioned on the same network segment as the Packetbeat deployment or to control traffic routed to monitored interfaces.

The record
Technical detail
CVSS v3.1
5.7 · MEDIUM
Vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00306 · 22.1th percentile
Weakness
CWE-129 · Improper Validation of Array Index
Published
2026-03-19T17:08Z
EPSS history
Timeline
  • 19 MAR 17:08Z
    Improper Validation of Array Index in Packetbeat Leading to Denial of Service
    cvelistv5