CVE-2026-1871
TP-Link Tapo C200 v5 contains a stack-based buffer overflow flaw in RTSP authentication handling due to improper validation of Authorization header field lengths, which can be triggered by a crafted authentication request.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.30%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
TP-Link Tapo C200 v5 contains a stack-based buffer overflow flaw in RTSP authentication handling due to improper validation of Authorization header field lengths, which can be triggered by a crafted authentication request. Successful exploitation causes the affected RTSP core service process to crash and triggers an automatic system reboot, resulting in a denial of service (DoS) condition. This prevents legitimate users from accessing the camera’s live video stream or management interface until the service restarts.
- CVSS 4.0
- 7.1 HIGHCVSS: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/M
- EPSS
- 0.30% probability · 23th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-121
- Affected
- tp-link/tapo c200 firmware
- Source
- f23511db-6c3e-4e32-a477-6aa17d310630
References
- https://www.tp-link.com/en/support/download/tapo-c200/v5/#Firmware-Release-NotesRelease Notes
- https://www.tp-link.com/kr/support/download/tapo-c200/#Firmware-Release-NotesRelease Notes
- https://www.tp-link.com/us/support/download/tapo-c200/v5/#Firmware-Release-NotesRelease Notes
- https://www.tp-link.com/us/support/faq/5113/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.