Vulnerability-Lookup

CVE-2026-35018 (GCVE-0-2026-35018)

Vulnerability from cvelistv5 – Published: 2026-06-23 13:46 – Updated: 2026-06-24 15:04

Title

NetComm NF20MESH < R6B032 Authenticated RCE via OS Command Injection

Summary

NetComm NF20MESH routers running firmware R6B031 and earlier contain an authenticated remote code execution vulnerability that allows authenticated attackers to execute arbitrary commands as root by injecting shell metacharacters into the username JSON parameter processed by the dalStorage_addUserAccount function. Attackers can exploit the unsafe concatenation of user-supplied input into a shell command string passed to rut_doSystemAction without sanitization to achieve full root-level command execution on the underlying operating system.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

VulnCheck

References

4 references

URL	Tags
https://signal11.io/advisories/netcomm-nf20-mesh-…	technical-description
https://support.netcommwireless.com/api/Media/Fir…	release-notespatch
https://support.netcommwireless.com/products/nf20…	product
https://www.vulncheck.com/advisories/netcomm-nf20…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
NetComm Wireless Pty Ltd	NF20MESH	Affected: 0 , < R6B032 (custom)

Date Public

2026-06-18 00:00

Credits

Brendan Scarvell of Signal 11

Show details on NVD website

JSON

To clipboard

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  "containers": {
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                "id": "CVE-2026-35018",
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                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-24T15:04:32.446467Z",
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        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "NetComm NF20MESH \u003c R6B032 Authenticated RCE via OS Command Injection",
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    "dateReserved": "2026-03-31T20:40:15.618Z",
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    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
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      "epss": "0.00664",
      "percentile": "0.47055"
    },
    "vulnrichment": {
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}

GHSA-JQC2-W244-P56P

Vulnerability from github – Published: 2026-06-23 15:32 – Updated: 2026-06-23 15:32

Details

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-35018"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-23T15:16:33Z",
    "severity": "HIGH"
  },
  "details": "NetComm NF20MESH routers running firmware R6B031 and earlier contain an authenticated remote code execution vulnerability that allows authenticated attackers to execute arbitrary commands as root by injecting shell metacharacters into the username JSON parameter processed by the dalStorage_addUserAccount function. Attackers can exploit the unsafe concatenation of user-supplied input into a shell command string passed to rut_doSystemAction without sanitization to achieve full root-level command execution on the underlying operating system.",
  "id": "GHSA-jqc2-w244-p56p",
  "modified": "2026-06-23T15:32:37Z",
  "published": "2026-06-23T15:32:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35018"
    },
    {
      "type": "WEB",
      "url": "https://signal11.io/advisories/netcomm-nf20-mesh-remote-code-execution"
    },
    {
      "type": "WEB",
      "url": "https://support.netcommwireless.com/api/Media/Firmware/4407c21d-e990-49a4-9754-b72475f20c76?Product=NF20MESH%20Release%20Notes.pdf"
    },
    {
      "type": "WEB",
      "url": "https://support.netcommwireless.com/products/nf20mesh#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/netcomm-nf20mesh-r6b032-authenticated-rce-via-os-command-injection"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-35018 (GCVE-0-2026-35018)

GHSA-JQC2-W244-P56P

Tags

Sightings

Nomenclature