Authenticated Format String Injection on TP-Link Tapo C110
Key facts
- Attack vector
- Adjacent network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
An authenticated format string vulnerability exists in the ONVIF service of Tapo C110 v2 due to improper handling of user-controlled input. Externally controlled data is interpreted as a format string, which can be used to manipulate stack memory, including control flow data such as return addresses. A remote authenticated attacker may redirect execution flow to existing internal functions, triggering an unauthorized factory reset, leading to loss of configuration, deletion of stored credentials and service disruption.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| TP-Link | Tapo C110 v2 | before 1.5.4 Build 260428 | 1.5.4 Build 260428 | Patch available | CNA |
- Tapo C110 v2 VendorTP-Link Affected before 1.5.4 Build 260428 Fixed in 1.5.4 Build 260428 Patch available CNA
Remediation
- Fix · CNA Tapo C110 v2 (TP-Link Systems Inc.) Fixed in 1.5.4 Build 260428
Timeline
- 2026-10-02 Threatist record created from CVE-2026-6250
- 2026-10-03 Alias added: GHSA-4gmj-9m2m-6h5f
- 2026-10-25 EPSS moved to the below the 50th percentile
References
Patch 3
Sources
- CVE-2026-6250 · CVE Program
- CVE-2026-6250 · NVD
- FIRST EPSS
- GHSA-4gmj-9m2m-6h5f · GitHub Advisory Database · CC BY 4.0
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