CVE-2016-7959: siemens simatic_step_7 7PK - Security Features
CVSS: 4.7v3.0MediumModified
Published 13-10-2016Last modified 06-08-2024
Vulnerability summary
CVE-2016-7959 is a medium (CVSS 4.7) 7PK - Security Features vulnerability in siemens simatic_step_7. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21% of scored vulnerabilities.
CVSS score
4.7/10
010
Medium · v3.0 (NVD)EPSS score
0.30%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 13-10-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 1 source · 2 versionsMedium 4.7Preferred score · NVD (NIST)
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:NSourcesSingle source
Low 1.9Preferred score · NVD (NIST)
AV:L/AC:M/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
0.30%
Chance of exploitation in the next 30 days
Percentile
21%
Versus all other CVEs
30-day change
0.00 pp
From 0.30% on 19-09-2026
19-09-202619-10-2026
EPSS score0.30%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Siemens1 product
- simatic_step_7≤ 13.010
1 vendor · 1 product
References
3 links- ics-cert.us-cert.gov/advisories/ICSA-16-287-03X Refsource MISC
- www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-869766.pdfX Refsource CONFIRMVendor Advisory