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Unauthenticated Onboarding Connect NULL Pointer Dereference Denial of Service Vulnerability in TP-Link Tapo C120 & C200

Type: advisorySource: Official CVE List1 source record

Tapo C120 v1 and C200 v5 contain a NULL pointer dereference in the HTTPS onboarding connect request parser. The interface is reachable without authentication after initial setup and does not validate that a password field is present for certain authentication and encryption parameter combinations, allowing a malformed request from the same local network to crash the HTTPS service Successful exploitation may temporarily make HTTPS management functions unavailable. Repeated malformed requests may sustain the denial-of-service condition, and recovery may in some cases require a device reboot.

Announced Source revision 1
Original source ↗

CVE-2026-9032

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-9032

Tapo C200 V5

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Tapo C120 V1

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "TP-Link Systems Inc.",
    "product": "Tapo C200 V5",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "V5_1.4.6 Build 260709 Rel.27675n",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  },
  {
    "vendor": "TP-Link Systems Inc.",
    "product": "Tapo C120 V1",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "V1_1.9.4 Build 260813 Rel.79754n",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-9032

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#9508 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement