CVE-2025-15557

Traffic interception via improper certificate validation

Published Feb 5, 2026 · Updated Feb 5, 2026

Improper certificate validation in TP-Link Tapo H100 v1 and P100 v1 allows man-in-the-middle attackers to alter device-cloud traffic. The device-cloud TLS client fails to reject an untrusted peer certificate, but TP-Link has not disclosed the exact failed check or code path. Exploitation requires an on-path position on the same network segment and passive device activity; it permits reading and modification of device data and operations.

CVSS severity7.5
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in TP-Link Tapo H100 v1 and P100 v1 allows man-in-the-middle attackers to alter device-cloud traffic. The device-cloud TLS client fails to reject an untrusted peer certificate, but TP-Link has not disclosed the exact failed check or code path. Exploitation requires an on-path position on the same network segment and passive device activity; it permits reading and modification of device data and operations.

The record

CVE
CVE-2025-15557
Published
Feb 5, 2026
Updated
Feb 5, 2026
Vendor
TP-Link Systems Inc.
Product
Tapo P100
Classifications
CWE-295, CAPEC-94, T1557
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 5, 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 <1.2.6

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

TP-Link Systems Inc. · Tapo P100version=0 <1.2.6
TP-Link Systems Inc. · Tapo H100version=0 <1.6.1

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5TP-Link Systems Inc.CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/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.

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

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-295Improper Certificate Validation
CAPEC-94Adversary in the Middle (AiTM)
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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