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CVE-2026-1871

HIGHCVSS 7.1/10EPSS 0.30%

Last modified

CVE-2026-1871 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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.. EPSS estimates a 0.30% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
6.5/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 4.0
7.1/10

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

EPSS Probability
0.30%

22.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
Tp-LinkTapo C200 Firmware1.0.5Build 240327
Tp-LinkTapo C200 Firmware1.0.12Build 240527
Tp-LinkTapo C200 Firmware1.0.13Build 240619
Tp-LinkTapo C200 Firmware1.0.17Build 240806
Tp-LinkTapo C200 Firmware1.1.4Build 241219
Tp-LinkTapo C200 Firmware1.1.8Build 250310
Tp-LinkTapo C200 Firmware1.2.3Build 250610
Tp-LinkTapo C200 Firmware1.3.1Build 250910
Tp-LinkTapo C200 Firmware1.3.3Build 251119
Tp-LinkTapo C200 Firmware1.3.5Build 260228

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is 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. 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.
How severe is CVE-2026-1871?
CVE-2026-1871 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.
How do I fix CVE-2026-1871?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-1871?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST