High severity · published Jan 27, 2026
CVE-2026-0918
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
7.5
CVSS
0.7%
EPSS
No
On KEV
Description
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.
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)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
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-2026-0918
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-0918
www.crac-learning.com
https://www.crac-learning.com/post/smart-home-security-research-cve-2026-0918-assigned
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-c100/v5/
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/
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