CVE-2026-1871

Device reboot via oversized Authorization header

Published Jun 2, 2026 · Updated Jun 2, 2026

Stack-based buffer overflow in TP-Link Tapo C200 v5 before 1.4.4 Build 260527 Rel.28339n allows remote attackers to reboot the camera. The RTSP authentication handler accepts an oversized Authorization header without enforcing the destination stack buffer's length boundary. Adjacent-network access is required; no credentials or user interaction are needed, and exploitation interrupts live video and management access until restart.

CVSS severity7.1
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in TP-Link Tapo C200 v5 before 1.4.4 Build 260527 Rel.28339n allows remote attackers to reboot the camera. The RTSP authentication handler accepts an oversized Authorization header without enforcing the destination stack buffer's length boundary. Adjacent-network access is required; no credentials or user interaction are needed, and exploitation interrupts live video and management access until restart.

The record

CVE
CVE-2026-1871
Published
Jun 2, 2026
Updated
Jun 2, 2026
Vendor
TP-Link Systems Inc.
Product
Tapo C200
Classifications
CWE-121, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.4.4 Build 260527 Rel.28339n

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

TP-Link Systems Inc. · Tapo C200version=0 <1.4.4 Build 260527 Rel.28339n

Published CVSS scores

7.1TP-Link Systems Inc.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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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