CVE-2026-26933

mediumpriority · track · 0EPSS 0.003 · 16 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.25% (16th) EPSS

CVSS 5.7 · medium

Is it mine?

10 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-28

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

Technical severity, 0–10. One row per scoring source.

5.7

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.7mediumAV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.15.7mediumCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.15.7mediumCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · security@elastic.coexploitability 2.1 · impact 3.6

v3.15.7mediumCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.15.2mediumCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-129USCWE-129USCWE-129US

affected products (10)

Products and version ranges known to be affected.

Elastic Packetbeat≤ 9.0.0 ≤9.2.4enisa_euvdEU
Elastic Packetbeat≤ 8.0.0 ≤8.19.10enisa_euvdEU
Elastic NV Packetbeat8.0.0 → 8.19.10fstec_bduRU
Elastic NV Packetbeat9.0.0 → 9.2.4fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 8.0fstec_bduRU
elasticsearch packetbeat8.0.0 → 8.19.11nvdUScpe:2.3:a:elasticsearch:packetbeat:*:*:*:*:*:*:*:*
elasticsearch packetbeat9.0.0 → 9.2.5nvdUScpe:2.3:a:elasticsearch:packetbeat:*:*:*:*:*:*:*:*
Go github.com/elastic/beatsall versionsosvUSpkg:golang/github.com/elastic/beats
Go github.com/elastic/beats/v7< 7.0.0-alpha2.0.20260126223743-dec1b31111ecosvUSpkg:golang/github.com/elastic/beats/v7

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-27qj-9gvp-8rh9Packetbeat does not properly validate an array index in multiple protocol parser components2026-03-19ghsa · osvUS
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.
GO-2026-4789Packetbeat does not properly validate an array index in multiple protocol parser components in github.com/elastic/beats2026-04-07vendor · osvUS
Packetbeat does not properly validate an array index in multiple protocol parser components in github.com/elastic/beats

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv nvd NVD CVE.org MITRE

published 2026-03-19modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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