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TI-2026-07939 Aliases CVE-2026-9032GHSA-gq3v-7fcg-vgjc

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

Priority LOW 30CWE-476Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-476.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00157 4th percentileScored 2026-11-07
Fix Fixed Tapo C200 V5 (TP-Link Systems Inc.): V5_1.4.6 Build 260709 Rel.27675nTapo C120 V1 (TP-Link Systems Inc.): V1_1.9.4 Build 260813 Rel.79754n

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TP-LinkTapo C200 V5before V5_1.4.6 Build 260709 Rel.27675nV5_1.4.6 Build 260709 Rel.27675nPatch availableCNA
TP-LinkTapo C120 V1before V1_1.9.4 Build 260813 Rel.79754nV1_1.9.4 Build 260813 Rel.79754nPatch availableCNA
  • Tapo C200 V5 VendorTP-Link Affected before V5_1.4.6 Build 260709 Rel.27675n Fixed in V5_1.4.6 Build 260709 Rel.27675n Patch available CNA
  • Tapo C120 V1 VendorTP-Link Affected before V1_1.9.4 Build 260813 Rel.79754n Fixed in V1_1.9.4 Build 260813 Rel.79754n Patch available CNA

Remediation

  • Fix · CNA Tapo C200 V5 (TP-Link Systems Inc.) Fixed in V5_1.4.6 Build 260709 Rel.27675n
  • Fix · CNA Tapo C120 V1 (TP-Link Systems Inc.) Fixed in V1_1.9.4 Build 260813 Rel.79754n

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    TP-Link Systems Tapo C120 v1, Tapo C200 v5 — tp-link.com/us/support/faq/5321

    4 records Highest priority Priority LOW 4 LOW

    Other records, highest priority first

    • TI-2026-65366 Unauthenticated Remote Code Execution via MacTool Command Injection in TP-Link Tapo C120 & C200Priority LOW 39
    • TI-2026-54630 Missing authentication in TP-Link Tapo C200 v5Priority LOW 31
    • TI-2026-54629 Unauthenticated Onboarding Scan Information Disclosure in TP-Link Tapo C120 & C200Priority LOW 23
    Show all 4 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-9032
  2. 2026-10-03 Alias added: GHSA-gq3v-7fcg-vgjc
  3. 2026-10-06 CISA SSVC decision points changed

References

Patch 4

Advisory 1

  • TI-2023-16571 TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain… KEVCVSS 3.1HIGH 8.8
  • TI-2023-01313 Command injection in TP-Link Archer AX21 KEVCVSS 3.1HIGH 8.8
  • TI-2020-14907 TP-Link TL-WA855RE V5 20200415-rel37464 devices allow an unauthenticated attacker (on the… KEVCVSS 3.1HIGH 8.8
  • TI-2025-08589 Authenticated RCE via Parental Control command injection KEVCVSS 4.0HIGH 8.6
  • TI-2015-02672 Directory traversal vulnerability in TP-LINK Archer C5 (1.2) with firmware before 150317… KEVCVSS 3.1HIGH 7.5
  • TI-2023-27456 Authentication bypass by spoofing in TP-Link TL-WR841N KEVCVSS 3.1MEDIUM 6.5
See all 636 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences