Medium severity6.5NVD Advisory· Published Sep 14, 2021· Updated Jun 17, 2026

CVE-2021-33716

Description

A vulnerability has been identified in SIMATIC CP 1543-1 (incl. SIPLUS variants) (All versions < V3.0), SIMATIC CP 1545-1 (All versions < V1.1). An attacker with access to the subnet of the affected device could retrieve sensitive information stored in cleartext.

Affected products

Siemens Foundation/SIMATIC CP 1543-1llm-fuzzy2 versions
< V3.0+ 1 more
- (no CPE)range: < V3.0
- (no CPE)range: All versions < V1.1
Siemens Foundation/SIPLUS variantsllm-create
Range: < V3.0
Siemens Foundation/SIMATIC CP 1242-7 V2 (incl. SIPLUS variants)cpe-rescue
Range: All versions < V3.0
Siemens Foundation/Cp 1543 1 Firmware
cpe:2.3:o:siemens:simatic_cp_1543-1_firmware:*:*:*:*:*:*:*:*
Range: <3.0
Siemens Foundation/Simatic Cp 1545 1 Firmware
cpe:2.3:o:siemens:simatic_cp_1545-1_firmware:*:*:*:*:*:*:*:*
Range: <1.1

Patches

Vulnerability mechanics

References

cert-portal.siemens.com/productcert/pdf/ssa-535997.pdfnvdPatchVendor Advisory

News mentions

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cvss	0.423
epss	0.000
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ransomware	0.000