Vulnerability-Lookup

CVE-2026-35019 (GCVE-0-2026-35019)

Vulnerability from cvelistv5 – Published: 2026-06-23 13:48 – Updated: 2026-06-23 15:11

Title

NetComm NF20MESH < R6B032 Hardcoded AES Key Authentication Bypass

Summary

NetComm NF20MESH routers running firmware R6B031 and earlier contain an authentication bypass vulnerability that allows unauthenticated attackers to gain administrative access by exploiting a hardcoded AES-256 key used to encrypt session cookies for the web management interface. Attackers can forge a valid encrypted session cookie using the shared hardcoded key and bypass authentication checks to obtain full administrative control of the management interface while any legitimate administrator session is active.

Severity

9.2 (Critical)


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

8.1 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-321 - Use of Hard-coded Cryptographic Key

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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                "id": "CVE-2026-35019",
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    "state": "PUBLISHED"
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      "percentile": "0.34508"
    },
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}

GHSA-PQH9-6FFR-V5FC

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

Details

Severity

8.1 (High)


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

9.2 (Critical)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/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-2026-35019"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-321"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-23T15:16:34Z",
    "severity": "CRITICAL"
  },
  "details": "NetComm NF20MESH routers running firmware R6B031 and earlier contain an authentication bypass vulnerability that allows unauthenticated attackers to gain administrative access by exploiting a hardcoded AES-256 key used to encrypt session cookies for the web management interface. Attackers can forge a valid encrypted session cookie using the shared hardcoded key and bypass authentication checks to obtain full administrative control of the management interface while any legitimate administrator session is active.",
  "id": "GHSA-pqh9-6ffr-v5fc",
  "modified": "2026-06-23T15:32:37Z",
  "published": "2026-06-23T15:32:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35019"
    },
    {
      "type": "WEB",
      "url": "https://signal11.io/advisories/netcomm-nf20-mesh-authentication-bypass"
    },
    {
      "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-hardcoded-aes-key-authentication-bypass"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/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-2026-35019 (GCVE-0-2026-35019)

GHSA-PQH9-6FFR-V5FC

Tags

Sightings

Nomenclature