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CVE-2026-26933

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

Published: Mar 19, 2026Updated: Mar 23, 2026 Sources: CVE List NVD BDUCWE-129
NVD MITRE
5.7CVSSMEDIUM
EPSS Score
0.2%
Top 85.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:AAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-129

Affected Products

РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
PacketbeatElastic NV
Mixed
Enterprise Software / itsm-monitoring
packetbeatelasticsearch
On-prem
Databases / nosql
PacketbeatElasticDatabases
ооо «ред софт»commercialRUOperating Systemsaka red soft
elastic nvcommercialUSEnterprise Softwareaka elastic
elasticsearchcommercialDatabasesaka elastic, elasticsearch service
elasticcommercialUSDatabasesaka elasticsearch co., elastic.co

Exploitability

Official Patch Available

References

https://github.com/elastic/beats
github.com
https://github.com/elastic/beats/commit/dec1b31111ec3500b82db21ba67dde5c914ee94d
github.com
https://github.com/elastic/beats/commit/941098459db6556b837194f40c076b08d51137cb
github.com
and 3 more references View all →

Timeline

Published
Mar 19, 2026
Last Updated
Mar 23, 2026

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