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TI-2026-01028 Aliases CVE-2026-1315GHSA-g9c2-p6j5-8cv4

Unauthenticated Denial of Service via Firmware Update Endpoint on TP-Link Tapo C220 & C520WS

Priority LOW 32CWE-20Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

By sending crafted files to the firmware update endpoint of Tapo C220 v1 and C520WS v2, the device terminates core system services before verifying authentication or firmware integrity. An unauthenticated attacker can trigger a persistent denial of service, requiring a manual reboot or application initiated restart to restore normal device operation.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00632 50th 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

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
  • 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

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

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-2026-00695 Unauthenticated Denial of Service via Oversized URL in HTTP Parser on TP-Link Tapo C210, C220 & C520WSPriority LOW 32
    • TI-2026-00694 Null Pointer Dereference in Tapo SmartCam HTTP Service on TP-Link Tapo C220 & C520WSPriority LOW 32
    Show all 3 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-1315
  2. 2026-10-03 Alias added: GHSA-g9c2-p6j5-8cv4
  3. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Patch 4

Advisory 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
  • TI-2026-00694 Null Pointer Dereference in Tapo SmartCam HTTP Service on TP-Link Tapo 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