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Fencer Intel
medium 4.7

CVE-2016-7959 json

Siemens SIMATIC STEP 7 (TIA Portal) before 14 improperly stores pre-shared key data in TIA project files, which makes it easier for local u…

published 2016-10-13 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-8807

cvss
4.7
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-16-287-03 updated cvss 2.5

Siemens SIMATIC STEP 7 (TIA Portal) Information Disclosure Vulnerabilities

  • Siemens SIMATIC STEP 7 (TIA Portal) <V14
    affected: mitigation “Access to the TIA Portal project files on engineering workstations or network storage must be protected with appropriate mechanisms from unauthorized access.” support.industry.siemens.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 4.7 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 1.9 AV:L/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.