High severity8.8NVD Advisory· Published Jan 11, 2022· Updated Jun 17, 2026
CVE-2021-45033
CVE-2021-45033
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.
Affected products
11- cpe:2.3:o:siemens:cp-8000_master_module_with_i\/o_-25\/\+70_firmware:*:*:*:*:*:*:*:*Range: <16.20
- cpe:2.3:o:siemens:cp-8000_master_module_with_i\/o_-40\/\+70_firmware:*:*:*:*:*:*:*:*Range: <16.20
- cpe:2.3:o:siemens:cp-8021_master_module_firmware:*:*:*:*:*:*:*:*Range: <16.20
- cpe:2.3:o:siemens:cp-8022_master_module_with_gprs_firmware:*:*:*:*:*:*:*:*Range: <16.20
<V16.20+ 1 more
- (no CPE)range: <V16.20
- (no CPE)range: All versions < V16.20
<V16.20+ 2 more
- (no CPE)range: <V16.20
- (no CPE)range: All versions < V16.20
- (no CPE)range: All versions < V16.20
<V16.20+ 1 more
- (no CPE)range: <V16.20
- (no CPE)range: All versions < V16.20
Patches
Vulnerability mechanics
References
1- cert-portal.siemens.com/productcert/pdf/ssa-324998.pdfnvdPatchVendor Advisory
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