CVE-2021-45033 Hardcoded credentials in CP-8000 MASTER MODULE WITH I/O -25/+70°C
An attacker with knowledge of hard-coded credentials can access an administrative debug shell on Siemens CP-8000 modules if the debug port is enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-45033?
CVE-2021-45033 is a high-severity vulnerability in Siemens CP-8000 MASTER MODULE WITH I/O -25/+70°C, published on 11 Jan 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been identified in CP-8000 MASTER MODULE WITH I/O -25/+70°C (All versions < V16.20), CP-8000 MASTER MODULE WITH I/O -40/+70°C (All versions < V16.20), CP-8021 MASTER MODULE (All versions < V16.20), CP-8022 MASTER MODULE WITH GPRS (All versions < V16.20). An undocumented debug port uses hard-coded default credentials. If this port is enabled by a privileged user, an attacker aware of the credentials could access an administrative debug shell on the affected device.
Weakness: CWE-798
Which versions are affected by CVE-2021-45033?
It affects 4 products.
Products include Siemens Cp-8000 Master Module With I\/O -25\/\+70 Firmware, Siemens Cp-8000 Master Module With I\/O -40\/\+70 Firmware, Siemens Cp-8021 Master Module Firmware, Siemens Cp-8022 Master Module With Gprs Firmware.
How do I fix CVE-2021-45033?
No fix has been published for CVE-2021-45033 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-45033 being exploited?
There is no known exploitation of CVE-2021-45033 in the wild and no public exploit code.
Other vulnerabilities in Siemens CP-8000 MASTER MODULE WITH I/O -25/+70°C
Sources
Also known as GHSA-q8fx-9mjf-3j27.