CVE-2026-1315

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

HIGH
7.5
CVSS Score
Published: January 27, 2026 at 05:53 PM UTC
Updated: June 17, 2026 at 10:15 AM UTC
4 products affected across 1 vendorTapo C520WS FirmwareTapo C220 FirmwareTapo C520WS

Using Tapo C220 v1 by TP-Link Systems Inc.?

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Severity
HIGH7.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.4.2
tp-link-tapo-c220 (same device)
v < 1.2.3
tp-link-tapo-c520ws (same device)
v < 1.4.2 Build 251112
Affected range stops below 1.4.2 Build 251112, so it looks safe — our inference, not a vendor statement
v < 1.2.3 Build 251114
Affected range stops below 1.2.3 Build 251114, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-20NVD-CWE-noinfo

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