CVE-2026-83601

Description

Netdata is an open source observability tool. Prior to 2.10.4, an authenticated child agent can send an oversized DIMENSION SLOT value that str2ull_encoded passes to pluginsd_rrddim_put_to_slot in src/plugins.d/pluginsd_internals.h without an upper bound. prd_array_create in src/database/rrdset-pluginsd-array.h can then wrap the size_t allocation calculation while retaining the original large array size, causing the subsequent initialization loop to write beyond the undersized heap allocation and crash the parent agent. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.

Overview

State: PUBLISHED
Assigner (CNA): GitHub_M
CVSS severity: MEDIUM
CVSS score: 6.5 / 10
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Effective score: 6.5 / 10 MEDIUM source: CNA overview
CWE(s): CWE-190, CWE-787
Reserved: 2026-08-31
Published: 2026-09-22 17:00 UTC
Last updated: 2026-09-22 17:00 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/83xxx/CVE-2026-83601.json

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-09-22 17:17:26 UTC
NVD last modified: 2026-09-22 17:17:26 UTC
NVD CVSS v3.1: 6.5 / 10 MEDIUM source: security-advisories@github.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Exploitability subscore: 2.8 / 10
Impact subscore: 3.6 / 10

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-84563
Assigner: GitHub_M
Published: Sep 22, 2026, 5:00:51 PM
Updated: Sep 22, 2026, 5:00:51 PM
EUVD base score (CVSS 3.1): 6.5 / 10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EUVD-reported EPSS: 0.0000
Vendors: netdata
Products: netdata (< 2.10.4)

ENISA description: Netdata is an open source observability tool. Prior to 2.10.4, an authenticated child agent can send an oversized DIMENSION SLOT value that str2ull_encoded passes to pluginsd_rrddim_put_to_slot in src/plugins.d/pluginsd_internals.h without an upper bound. prd_array_create in src/database/rrdset-pluginsd-array.h can then wrap the size_t allocation calculation while retaining the original large array size, causing the subsequent initialization loop to write beyond the undersized heap allocation and crash the parent agent. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.

EUVD references (4)

Affected products (1)

Vendor	Product	Versions	Platforms
netdata	netdata	`< 2.10.4` (affected)	—

Vendor references (4)

References embedded in the original CVE record by the assigning CNA.

https://github.com/netdata/netdata/security/advisories/GHSA-3qh4-842w-fvrm x_refsource_CONFIRM
https://github.com/netdata/netdata/pull/22598 x_refsource_MISC
https://github.com/netdata/netdata/commit/034a774f689ac01488fc261ca729ce0875819b1b x_refsource_MISC
https://github.com/netdata/netdata/releases/tag/v2.10.4 x_refsource_MISC

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (4)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://github.com/netdata/netdata/commit/034a774f689ac01488fc261ca729ce0875819b1b security-advisories@github.com
https://github.com/netdata/netdata/pull/22598 security-advisories@github.com
https://github.com/netdata/netdata/releases/tag/v2.10.4 security-advisories@github.com
https://github.com/netdata/netdata/security/advisories/GHSA-3qh4-842w-fvrm security-advisories@github.com

Remediations (10)

Security Advisory - Action Required - Active Exploitation of CVE-2026 ...

web:blog.checkpoint.com

CVE - 2026 -93616 is a newly discovered zero-day vulnerability in Security Management, and a fix is available now as part of this advisory. Fixes are available for both vulnerabilities. Customers running affected versions should install the applicable fixes immediately. Affected versions and remediation instructions are detailed below.

2026-09-23 15:43 UTC
CVE-2026-83601: Netdata Vulnerability (CVSS 6.5) | CVETodo

web:cvetodo.com

CVE-2026-83601 is a CVSS 6.5 medium-severity vulnerability in Netdata. Full technical analysis, mitigations , and exploit status — updated in real time.

2026-09-23 15:43 UTC
Microsoft discloses two actively exploited zero-days among 974 ...

web:cyberscoop.com

Microsoft addressed 974 defects across its product suite, including two actively exploited zero-day vulnerabilities, in its monthly Patch Tuesday security program.

2026-09-23 15:43 UTC
Microsoft January 2026 Security Updates (FYI) - Microsoft Q&A

web:learn.microsoft.com

January 2026 Security Updates This release consists of the following 112 Microsoft CVEs : Tag CVE Base Score CVSS Vector Exploitability FAQs? Workarounds? Mitigations ? Windows Deployment Services CVE - 2026 -0386 SQL Server CVE - 2026 -20803 Windows Hello…

2026-09-23 15:43 UTC
Security Update Guide - Microsoft

web:msrc-ppe.microsoft.com

The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.

2026-09-23 15:43 UTC
Security Update Guide - Microsoft Security Response Center

web:msrc.microsoft.com

Security Update Guide - Microsoft Security Response Center

2026-09-23 15:43 UTC
Microsoft Patch Tracker (September 2026): Exploit-Ranked | Senserva

web:senserva.com

Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.

2026-09-23 15:43 UTC
Description of the security update for Office 2016: August 11, 2026 ...

web:support.microsoft.com

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2016. It doesn't apply to the Office 2016 Click-to-Run editions, such as Microsoft Office 365 Home. (See What version of Office am I using?) How to get and install the update Method 1: Microsoft Update This update is available from Microsoft Update. When you turn on ...

2026-09-23 15:43 UTC
Patch Tuesday September 2026 | Action1

web:www.action1.com

In this issue: September 2026 Patch Tuesday updates from Microsoft, featuring zero-day vulnerabilities and critical security flaws.

2026-09-23 15:43 UTC
CVE-2026-83601: netdata: Netdata is an open source ... - Rapid7

web:www.rapid7.com

CVE-2026-83601 : netdata: Netdata is an open source observability tool. View severity, references, and remediation details from Rapid7.

2026-09-23 15:43 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-83601.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "netdata",
          "vendor": "netdata",
          "versions": [
            {
              "status": "affected",
              "version": "< 2.10.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Netdata is an open source observability tool. Prior to 2.10.4, an authenticated child agent can send an oversized DIMENSION SLOT value that str2ull_encoded passes to pluginsd_rrddim_put_to_slot in src/plugins.d/pluginsd_internals.h without an upper bound. prd_array_create in src/database/rrdset-pluginsd-array.h can then wrap the size_t allocation calculation while retaining the original large array size, causing the subsequent initialization loop to write beyond the undersized heap allocation and crash the parent agent. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-190",
              "description": "CWE-190: Integer Overflow or Wraparound",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-22T17:00:51.410Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/netdata/netdata/security/advisories/GHSA-3qh4-842w-fvrm",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/netdata/netdata/security/advisories/GHSA-3qh4-842w-fvrm"
        },
        {
          "name": "https://github.com/netdata/netdata/pull/22598",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/netdata/netdata/pull/22598"
        },
        {
          "name": "https://github.com/netdata/netdata/commit/034a774f689ac01488fc261ca729ce0875819b1b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/netdata/netdata/commit/034a774f689ac01488fc261ca729ce0875819b1b"
        },
        {
          "name": "https://github.com/netdata/netdata/releases/tag/v2.10.4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/netdata/netdata/releases/tag/v2.10.4"
        }
      ],
      "source": {
        "advisory": "GHSA-3qh4-842w-fvrm",
        "discovery": "UNKNOWN"
      },
      "title": "Netdata: Streaming protocol dimension slot has no upper-bound guard, allowing integer overflow and out-of-bounds write"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-83601",
    "datePublished": "2026-09-22T17:00:51.410Z",
    "dateReserved": "2026-08-31T20:36:25.743Z",
    "dateUpdated": "2026-09-22T17:00:51.410Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}