CVE-2026-1871 json
Authenticated Stack-based Buffer Overflow in RTSP Authentication of Tapo C200
published 2026-06-02 5 mo ago modified 2026-07-22 3 mo ago also EUVD-2026-33978
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- TP-Link Systems Inc. Tapo C200 v5 1.4.4 Build 260527 Rel.28339n
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.1 | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| CNA | 4.0 | 7.1 | CVSS: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 |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
- TP-Link Systems Inc. Tapo C200 v5
Classification
- Weakness
-
- CWE-121 Stack-based Buffer Overflow
References
-
tp-link.com
/us/support/download/tapo-c200/v5/#Firmware-Release-Notes
patch, release-notes
-
tp-link.com
/en/support/download/tapo-c200/v5/#Firmware-Release-Notes
patch, release-notes
-
tp-link.com
/kr/support/download/tapo-c200/#Firmware-Release-Notes
patch, release-notes
-
tp-link.com
/us/support/faq/5113/
vendor-advisory
Sources
- CVE List CVE-2026-1871
- NVD CVE-2026-1871
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