High severity · published Jan 27, 2026
CVE-2026-1315
Unauthenticated Denial of Service via Firmware Update Endpoint on TP-Link Tapo C220 & C520WS
7.5
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TC
Tapo C220 v1 · TP-Link Systems Inc.
before 1.4.2 Build 251112 · source: vendor
TC
Tapo C520WS v2 · TP-Link Systems Inc.
before 1.2.3 Build 251114 · source: vendor
TC
Tapo C220 Firmware · Tp-link
before 1.4.2 · source: NVD
TC
Tapo C520ws Firmware · Tp-link
before 1.2.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1315
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1315
Product
https://www.tp-link.com/en/support/download/tapo-c220/v1/
Product
https://www.tp-link.com/en/support/download/tapo-c520ws/v2/
Product
https://www.tp-link.com/us/support/download/tapo-c220/v1.60/
Product
https://www.tp-link.com/us/support/download/tapo-c520ws/v2/
Vendor Advisory
https://www.tp-link.com/us/support/faq/4923/
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