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TI-2026-00694 Aliases CVE-2026-0918GHSA-ffwx-rgqv-xv4m

Null Pointer Dereference in Tapo SmartCam HTTP Service on TP-Link Tapo C220 & C520WS

Priority LOW 32CWE-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

The Tapo C100 v5, C220 v1 and C520WS v2 cameras’ HTTP service does not safely handle POST requests containing an excessively large Content-Length header. The resulting failed memory allocation triggers a NULL pointer dereference, causing the main service process to crash. An unauthenticated attacker can repeatedly crash the service, causing temporary denial of service. The device restarts automatically, and repeated requests can keep it unavailable.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00722 54th percentileScored 2026-11-07
Fix Fixed Tapo C220 v1 (TP-Link Systems Inc.): 1.4.2 Build 251112Tapo C520WS v2 (TP-Link Systems Inc.): 1.2.3 Build 251114+1 more product

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 C220 v1before 1.4.2 Build 2511121.4.2 Build 251112Patch availableCNA
TP-LinkTapo C520WS v2before 1.2.3 Build 2511141.2.3 Build 251114Patch availableCNA
TP-LinkTapo C100 v5before 1.4.3 Build 2511281.4.3 Build 251128Patch availableCNA
  • Tapo C220 v1 VendorTP-Link Affected before 1.4.2 Build 251112 Fixed in 1.4.2 Build 251112 Patch available CNA
  • Tapo C520WS v2 VendorTP-Link Affected before 1.2.3 Build 251114 Fixed in 1.2.3 Build 251114 Patch available CNA
  • Tapo C100 v5 VendorTP-Link Affected before 1.4.3 Build 251128 Fixed in 1.4.3 Build 251128 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:tp-link:tapo_c220_firmware:*:*:*:*:*:*:*:*before 1.4.2VulnerableTP-Link
cpe:2.3:h:tp-link:tapo_c220:1:*:*:*:*:*:*:*1Running onTP-Link
cpe:2.3:o:tp-link:tapo_c520ws_firmware:*:*:*:*:*:*:*:*before 1.2.3VulnerableTP-Link
cpe:2.3:h:tp-link:tapo_c520ws:2:*:*:*:*:*:*:*2Running onTP-Link
  • cpe:2.3:o:tp-link:tapo_c220_firmware:*:*:*:*:*:*:*:* Versions before 1.4.2 Vulnerable ·TP-Link
  • cpe:2.3:h:tp-link:tapo_c220:1:*:*:*:*:*:*:* Versions 1 Running on ·TP-Link
  • cpe:2.3:o:tp-link:tapo_c520ws_firmware:*:*:*:*:*:*:*:* Versions before 1.2.3 Vulnerable ·TP-Link
  • cpe:2.3:h:tp-link:tapo_c520ws:2:*:*:*:*:*:*:* Versions 2 Running on ·TP-Link

Remediation

  • Fix · CNA Tapo C220 v1 (TP-Link Systems Inc.) Fixed in 1.4.2 Build 251112
  • Fix · CNA Tapo C520WS v2 (TP-Link Systems Inc.) Fixed in 1.2.3 Build 251114
  • Fix · CNA Tapo C100 v5 (TP-Link Systems Inc.) Fixed in 1.4.3 Build 251128

Fixed in the same release

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

  • Advisory ·

    TP-Link Systems Tapo C220 v1, Tapo C520WS v2 — tp-link.com/us/support/faq/4923

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2026-01028 Unauthenticated Denial of Service via Firmware Update Endpoint on TP-Link Tapo C220 & C520WSPriority LOW 32
    • TI-2026-00695 Unauthenticated Denial of Service via Oversized URL in HTTP Parser on TP-Link Tapo C210, C220 & C520WSPriority LOW 32
    Show all 3 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-0918
  2. 2026-10-03 Alias added: GHSA-ffwx-rgqv-xv4m

References

Patch 5

Advisory 2

  • TI-2026-01028 Unauthenticated Denial of Service via Firmware Update Endpoint on TP-Link Tapo C220 & C520WS CVSS 4.0HIGH 7.1
  • TI-2026-00695 Unauthenticated Denial of Service via Oversized URL in HTTP Parser on TP-Link Tapo C210, C220 & C520WS CVSS 4.0HIGH 7.1

Sources

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