01 Record
CVE-2018-4850
A vulnerability has been identified in SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below (All versions), SIMATIC S7-400 (incl. F) CPU hardware version 5.0 (All firmware versions < V5.2),
UnratedPUBLISHEDCNA: siemens
CNA base scoreUnratedNo CNA CVSS vector
02 Description
A vulnerability has been identified in SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below (All versions), SIMATIC S7-400 (incl. F) CPU hardware version 5.0 (All firmware versions < V5.2),
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.37% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 83.7% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2018-05-16 17:00Z8 YR AGO
- Last updated
- 2024-09-16 22:46Z2 YR AGO
- Reserved
- 2018-01-02
- Assigning CNA
- siemens
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-20Improper Input ValidationClass
- Data version
- 5.1
- Document digest
- afcd91756e3af3d27283d1544941a6115e02de4615fe773e6bb0c3dc3cf9d7a4
05 Affected products
VendorProductVersionsPlatforms
Siemens AGSIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below, SIMATIC S7-400 (incl. F) CPU hardware version 5.0, SIMATIC S7-400H CPU hardware version 4.5 and belowSIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below : All versions, SIMATIC S7-400 (incl. F) CPU hardware version 5.0 : All firmware versions < V5.2, SIMATIC S7-400H CPU hardware version 4.5 and below : All versions—
06 References
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-914382.pdf
- www.securityfocus.com104217http://www.securityfocus.com/bid/104217
- www.siemens.comhttps://www.siemens.com/global/en/home/products/services/cert.html#SecurityPublications