CVE-2026-83600Public exploitNetwork attack vectorHinoki check available

Parent-agent crash via oversized streaming chart slot

Published Sep 22, 2026 · Updated Sep 22, 2026

Denial of service in Netdata Agent before 2.10.4 allows remote authenticated users to crash a parent via a crafted CHART slot. The streaming parser passes an oversized decoded slot to pluginsd_rrdset_cache_put_to_slot, which requests an approximately 16 GiB pointer array and aborts after allocation failure. A valid streaming API key is required, and retained stream access permits repeated crashes that disable centralized monitoring.

CVSS severity6.5
Medium
EPSS probability0.55%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Denial of service in Netdata Agent before 2.10.4 allows remote authenticated users to crash a parent via a crafted CHART slot. The streaming parser passes an oversized decoded slot to pluginsd_rrdset_cache_put_to_slot, which requests an approximately 16 GiB pointer array and aborts after allocation failure. A valid streaming API key is required, and retained stream access permits repeated crashes that disable centralized monitoring.

The record

CVE
CVE-2026-83600
Published
Sep 22, 2026
Updated
Sep 22, 2026
Vendor
Netdata
Product
Netdata Agent
Classifications
CWE-193, CWE-400, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.10.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Netdata · Netdata Agentversion=< 2.10.4

Published CVSS scores

6.5GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-193Off-by-one Error
CWE-400Uncontrolled Resource Consumption
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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