Cleartext storage of sensitive information in Siemens SIMATIC CP 1543-1
Priority LOW 28CWE-312Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-312.
Summary
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.
Why it matters now
EPSS 0.00253 16th percentileScored 2026-11-07
Fix Fixed SIMATIC CP 1543-1 (incl. SIPLUS variants) (Siemens): V3.0SIMATIC CP 1545-1 (Siemens): V1.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Siemens | SIMATIC CP 1543-1 (incl. SIPLUS variants) | before V3.0 | V3.0 | Patch available | CNA |
| Siemens | SIMATIC CP 1545-1 | before V1.1 | V1.1 | Patch available | CNA |
- SIMATIC CP 1543-1 (incl. SIPLUS variants) VendorSiemens Affected before V3.0 Fixed in V3.0 Patch available CNA
- SIMATIC CP 1545-1 VendorSiemens Affected before V1.1 Fixed in V1.1 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:simatic_cp_1543-1_firmware:*:*:*:*:*:*:*:* | before 3.0 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_cp_1543-1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_cp_1545-1_firmware:*:*:*:*:*:*:*:* | before 1.1 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_cp_1545-1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:o:siemens:simatic_cp_1543-1_firmware:*:*:*:*:*:*:*:* Versions before 3.0 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_cp_1543-1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_cp_1545-1_firmware:*:*:*:*:*:*:*:* Versions before 1.1 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_cp_1545-1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Remediation
- Fix · CNA SIMATIC CP 1543-1 (incl. SIPLUS variants) (Siemens) Fixed in V3.0
- Fix · CNA SIMATIC CP 1545-1 (Siemens) Fixed in V1.1
Timeline
- 2026-10-02 Threatist record created from CVE-2021-33716
- 2026-10-03 Alias added: GHSA-9mhw-hmhp-8rm5
References
More Siemens Simatic Cp 1543-1 Firmware vulnerabilities
- TI-2016-07034 A vulnerability has been identified in SIMATIC CP 1543-1 (All versions < V2.0.28), SIPLUS… KEVCVSS 3.1HIGH 7.5
- TI-2019-09597 An arbitrary file copy vulnerability in mod_copy in ProFTPD up to 1.3.5b allows for… CVSS 3.1CRITICAL 9.8
- TI-2022-15626 Heap-based buffer overflow in Siemens SIMATIC CP 1242-7 V2 CVSS 3.1CRITICAL 10.0
- TI-2021-05785 Improper input validation in https://github.com/curl/curl CVSS 3.1LOW 3.7
- TI-2022-15627 Command injection in Siemens SIMATIC CP 1242-7 V2 CVSS 3.1CRITICAL 9.8
- TI-2022-15628 Code injection in Siemens RUGGEDCOM RM1224 LTE EU CVSS 4.0HIGH 8.8
Sources
- CVE-2021-33716 · CVE Program
- CVE-2021-33716 · NVD
- FIRST EPSS
- GHSA-9mhw-hmhp-8rm5 · GitHub Advisory Database · CC BY 4.0
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