8.8

CVE-2025-15557: Improper Certificate Validation in TP-Link Tapo H100 and P100 Allows Man-in-the-Middle Attack

Analyzed
Published 05-02-2026Last modified 05-02-2026

Vulnerability summary

CVE-2025-15557 is a high (CVSS 8.8) Improper Certificate Validation vulnerability in tp-link systems inc. tapo h100 v1. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.8% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (NVD)
EPSS score
0.20%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 05-02-2026
    PublishedVulnerability first disclosed.
  2. 05-02-2026
    Last modifiedVulnerability information updated.

Description

An Improper Certificate Validation vulnerability in TP-Link Tapo H100 v1 and Tapo P100 v1 allows an on-path attacker on the same network segment to intercept and modify encrypted device-cloud communications.  This may compromise the confidentiality and integrity of device-to-cloud communication, enabling manipulation of device data or operations.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.19% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Tp-link2 products
Tp-link systems inc.2 products

2 vendors · 4 products

References

5 links