CVE-2026-0918: tp-link systems inc. tapo c100 v5 NULL Pointer Dereference
Vulnerability summary
CVE-2026-0918 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in tp-link systems inc. tapo c100 v5. EPSS estimates a 0.73% chance of exploitation in the next 30 days, higher than 53.7% of scored vulnerabilities.
Timeline
- 27-01-2026PublishedVulnerability first disclosed.
- 29-04-2026Last modifiedVulnerability information updated.
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 metrics
3 scores · 2 sources · 2 versions- NVDNIST7.1HighCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS trend
Probability
0.73%
Chance of exploitation in the next 30 days
Percentile
54%
Versus all other CVEs
30-day change
+0.06 pp
From 0.68% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Tp-link systems inc.3 products
- tapo c100 v5< 1.4.3 Build 251128
- tapo c220 v1< 1.4.2 Build 251112
- tapo c520ws v2< 1.2.3 Build 251114
Tp-link2 products
- tapo_c220_firmware< 1.4.2
- tapo_c520ws_firmware< 1.2.3
2 vendors · 5 products
References
7 links- www.tp-link.com/us/support/faq/4923/Vendor Advisory
- www.crac-learning.com/post/smart-home-security-research-cve-2026-0918-assignedThird Party Advisory