CVE-2021-40366

Severity: high (CVSS 7.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-11-09 · updated 2026-06-17
Weakness: CWE-311

Description

A vulnerability has been identified in Climatix POL909 (AWB module) (All versions < V11.42), Climatix POL909 (AWM module) (All versions < V11.34). The web server of affected devices transmits data without TLS encryption. This could allow an unauthenticated remote attacker in a man-in-the-middle position to read sensitive data, such as administrator credentials, or modify data in transit.

Affected products

Siemens Climatix Pol909 Firmware: before 11.34; before 11.42 — fixed in 11.34, 11.42

How to fix

Upgrade to a fixed version: Siemens Climatix Pol909 Firmware 11.34, 11.42. Check the vendor advisory for mitigations.

References

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