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CVE-2026-0918

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

Published: Jan 27, 2026Updated: Apr 29, 2026 Sources: CVE List NVDCWE-476
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.7%
Top 52.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-476

Affected Products

tapo c220 firmwaretp-linkNetworking Infrastructure
tapo c520ws firmwaretp-linkNetworking Infrastructure
Tapo C220 v1TP-Link Systems Inc.Networking Infrastructure
Tapo C520WS v2TP-Link Systems Inc.Networking Infrastructure
Tapo C100 v5TP-Link Systems Inc.Networking Infrastructure
tp-linkcommercialTWNetworking Infrastructureaka tp-link, tp link
tp-link systems inc.commercialCNNetworking Infrastructureaka tp-link

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

https://www.crac-learning.com/post/smart-home-security-research-cve-2026-0918-assigned
crac-learning.com
https://www.tp-link.com/en/support/download/tapo-c220/v1/
tp-link.com
https://www.tp-link.com/en/support/download/tapo-c520ws/v2/
tp-link.com
and 4 more references View all →

Timeline

Published
Jan 27, 2026
Last Updated
Apr 29, 2026

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