Vulnerability in Siemens Simatic Step 7
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (21.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: -0.000
Affected products
Weakness classification (CWE)
References
- ics-cert.us-cert.gov/advisories/ICSA-16-287-03
- www.securityfocus.com/bid/93551 (VDB Entry, Third Party Advisory, vdb-entry)
- www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-869766.pdf (Vendor Advisory)
Frequently asked questions
- What is CVE-2016-7959?
- CVE-2016-7959 is a medium-severity vulnerability in Siemens Simatic Step 7, classified under CWE-254. CVSS score: 4.7/10. Published 2016-10-13.
- How severe is CVE-2016-7959?
- Medium severity. CVSS v3 base score is 4.7 out of 10.