Siemens SIMATIC STEP 7 (TIA Portal) 12 and 13 before 13 SP1 Upd1 improperly stores password data within project files, which makes it easier for local users to determine cleartext (1) protection-level passwords or (2) web-server passwords by leveraging the ability to read these files.
Conclusion & alert: CVE-2015-1602 is rated Low Risk (18.5/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.37%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.13% | 0.37% | +0.24% |
| 2 | 2025-03-30 | 0.16% | 0.13% | -0.03% |
| 3 | 2025-03-29 | — | 0.16% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 2.1 | 2.0 | LOW |
|
3.9 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| siemens | simatic_step_7 | <= 13.0 | cpe:2.3:a:siemens:simatic_step_7:*:sp1:*:*:*:*:*:* |
| siemens | simatic_step_7 | 12.0 | cpe:2.3:a:siemens:simatic_step_7:12.0:*:*:*:*:*:*:* |
| siemens | simatic_step_7 | 13.0 | cpe:2.3:a:siemens:simatic_step_7:13.0:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-315836.pdf | Patch Vendor Advisory |