CVE-2015-1601

Siemens SIMATIC STEP 7 (TIA Portal) 12 and 13 before 13 SP1 Upd1 allows man-in-the-middle attackers to obtain sensitive information or modify transmitted data via unspecified vectors.

Published: 2015-04-05 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-1601 is rated Moderate Risk (52.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.43%). EPSS rose +1.03% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-1601

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 0.40% 1.43% +1.03%
2 2025-05-03 0.52% 0.40% -0.12%
3 2025-03-30 — 0.52% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-1601

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2015-1601

Affected software / configurations for CVE-2015-1601

Vendor Product Version Raw CPE
siemens simatic_step_7 <= 13 cpe:2.3:a:siemens:simatic_step_7:*:sp1:*:*:*:*:*:*
siemens simatic_step_7 12 cpe:2.3:a:siemens:simatic_step_7:12:*:*:*:*:*:*:*
siemens simatic_step_7 13 cpe:2.3:a:siemens:simatic_step_7:13:*:*:*:*:*:*:*

References for CVE-2015-1601

cvelogic Threat Intelligence