CVE-2016-7959 — Siemens SIMATIC STEP 7 (TIA Portal) before 14 improperly stores pre-shared key data in TIA project files, which makes it easier for local users to obtain sensitive information by leveraging access to a file and conducting a brute-force attack

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MEDIUM

Siemens SIMATIC STEP 7 (TIA Portal) before 14 improperly stores pre-shared key data in TIA project files, which makes it easier for local users to obtain sensitive information by leveraging access to a file and conducting a brute-force attack

Published Oct 13, 2016

4.7

MEDIUM

CVSS 3.0

EPSS 0.30%

Description

Siemens SIMATIC STEP 7 (TIA Portal) before 14 improperly stores pre-shared key data in TIA project files, which makes it easier for local users to obtain sensitive information by leveraging access to a file and conducting a brute-force attack.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.30% 0.00297

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00297

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (9 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.30% (0.00297)	20.21th	v5 (v2026.06.15)
Jun 15, 2026	0.30% (0.00297)	21.13th	v5 (v2026.06.15)
Mar 17, 2025	0.06% (0.00063)	17.02th	v4 (v2025.03.14)
Dec 12, 2024	0.04% (0.00042)	5.07th	v3 (v2023.03.01)
Mar 7, 2023	0.04% (0.00042)	5.63th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00890)	30.33th	v2 (v2022.01.01)
Sep 10, 2022	0.89% (0.00890)	28.64th	v2 (v2022.01.01)
Apr 1, 2022	0.89% (0.00890)	26.62th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00890)	12.04th	v2 (v2022.01.01)

Weaknesses (1)

CWE-254

References (3)

http://www.securityfocus.com/bid/93551
vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-869766.pdf
x_refsource_CONFIRMVendor Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-16-287-03
x_refsource_MISC

Link	Providers	Tags
http://www.securityfocus.com/bid/93551		vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-869766.pdf		x_refsource_CONFIRMVendor Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-16-287-03		x_refsource_MISC

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Oct 13, 2016

Updated Aug 6, 2024

Reserved Sep 9, 2016

Link CVE-2016-7959

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2016-7959

Red Hat

Severity n/a

Public date n/a

Links CVE-2016-7959