Siemens Climatix POL909 (Update A)
Monitor6.4ICS-CERT ICSA-21-315-09Nov 11, 2021
Attack VectorNetwork
Auth RequiredNone
ComplexityHigh
User InteractionRequired
Summary
The Climatix POL909 AWM and AWB modules transmit sensitive data without proper encryption, allowing an attacker with network access to eavesdrop on or modify communications with the device. This could lead to unauthorized disclosure of system configuration or modification of operational parameters. The vulnerability is exploited through man-in-the-middle attacks on unencrypted network traffic.
What this means
What could happen
An attacker could intercept unencrypted communications with the Climatix POL909 controller to read sensitive configuration data or modify operational parameters in transit, potentially affecting building climate control operations.
Who's at risk
Building automation operators and facility managers running Climatix POL909 climate control systems should be concerned. This affects both AWM and AWB modules used in commercial HVAC and building management applications.
How it could be exploited
An attacker positioned on the network path to the Climatix POL909 (e.g., via compromised workstation, rogue DHCP, or local network access) can perform a man-in-the-middle attack on unencrypted communications to view or alter data being sent to or from the device. User interaction (clicking a link or opening a file) may be required to initiate the attack.
Prerequisites
- Network access to Climatix POL909 on the same network segment or routing path
- Attacker positioned to intercept traffic (man-in-the-middle capability)
- User interaction to trigger communication with the vulnerable device
Remotely exploitableNo authentication required for network interceptionLow complexity attack (man-in-the-middle)No patch currently available
Exploitability
Low exploit probability (EPSS 0.1%)
Affected products (2)
2 with fix
ProductAffected VersionsFix Status
Climatix POL909 (AWM module): All< 11.3411.34
Climatix POL909 (AWB module): All< 11.3411.34
Remediation & Mitigation
0/3
Schedule — requires maintenance window
0/1Patching may require device reboot — plan for process interruption
HOTFIXUpdate Climatix POL909 firmware to version 11.34 or later per Siemens Security Advisory SSA-252466
Long-term hardening
0/2HARDENINGIsolate Climatix POL909 on a separate network segment or restrict network access using firewalls to limit exposure to untrusted network paths
HARDENINGImplement network segmentation to prevent devices from untrusted networks from reaching the Climatix POL909 controller
CVEs (1)
↑↓ Navigate · Esc Close
API:
/api/v1/advisories/b55756e9-5307-4ac1-b24e-e42b5a063133