CVE-2026-78577

Wireless topology disclosure via unauthenticated onboarding scan

Published Oct 1, 2026 · Updated Oct 1, 2026

Information disclosure in TP-Link Systems Inc. Tapo C120 V1 and Tapo C200 V5 allows remote attackers to read nearby Wi-Fi metadata. The HTTPS onboarding scan action remains callable without authentication after initial setup and returns SSIDs, BSSIDs, security modes, and signal strengths. Exploitation requires access to the same local network and reveals nearby wireless topology, not camera video or administrative control.

CVSS severity5.3
Medium
EPSS probability0.15%
Next 30 days · Oct 18, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in TP-Link Systems Inc. Tapo C120 V1 and Tapo C200 V5 allows remote attackers to read nearby Wi-Fi metadata. The HTTPS onboarding scan action remains callable without authentication after initial setup and returns SSIDs, BSSIDs, security modes, and signal strengths. Exploitation requires access to the same local network and reveals nearby wireless topology, not camera video or administrative control.

The record

CVE
CVE-2026-78577
Published
Oct 1, 2026
Updated
Oct 1, 2026
Vendor
TP-Link Systems Inc.
Product
Tapo C120
Classifications
T1016
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 1, 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 <V1_1.9.4 Build 260813 Rel.79754n

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

TP-Link Systems Inc. · Tapo C120version=0 <V1_1.9.4 Build 260813 Rel.79754n
TP-Link Systems Inc. · Tapo C200version=0 <V5_1.4.6 Build 260709 Rel.27675n

Published CVSS scores

5.3TP-LinkCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1016System Network Configuration Discovery

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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