01 Record

CVE-2023-32735

A vulnerability has been identified in SIMATIC STEP 7 Safety V16 (All versions < V16 Update 7), SIMATIC STEP 7 Safety V17 (All versions < V17 Update 7), SIMATIC STEP 7 Safety V18 (All versions < V18

HighPUBLISHEDCNA: siemens

CNA base score7.0 CVSS v4.0CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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02 Description

A vulnerability has been identified in SIMATIC STEP 7 Safety V16 (All versions < V16 Update 7), SIMATIC STEP 7 Safety V17 (All versions < V17 Update 7), SIMATIC STEP 7 Safety V18 (All versions < V18

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.21% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 11.4% of scored records. A rank, not a probability.

NVD base score

7.0 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. 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

2024-07-09 12:04Z2 YR AGO

Last updated

2025-08-27 20:32Z1 YR AGO

Reserved

2023-05-12

Assigning CNA

siemens

Record state

PUBLISHED

Severity

High (CVSS 7.0)

CNA CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Weaknesses

CWE-502Deserialization of Untrusted DataBase

Data version

5.1

Document digest

c772f7434b26c915ad4339917cff2fcbe68d9d6e442bbb3ae60af895574cc782

05 Affected products

VendorProductVersionsPlatforms

SiemensSIMATIC STEP 7 Safety V160 to < V16 Update 7—

SiemensSIMATIC STEP 7 Safety V170 to < V17 Update 7—

SiemensSIMATIC STEP 7 Safety V180 to < V18 Update 2—

SiemensSIMATIC STEP 7 V160 to < V16 Update 7—

SiemensSIMATIC STEP 7 V170 to < V17 Update 7—

SiemensSIMATIC STEP 7 V180 to < V18 Update 2—

SiemensSIMATIC WinCC Unified V160 to < V16 Update 7—

SiemensSIMATIC WinCC Unified V170 to < V17 Update 7—

SiemensSIMATIC WinCC Unified V180 to < V18 Update 2—

SiemensSIMATIC WinCC V160 to < V16.7—

SiemensSIMATIC WinCC V170 to < V17.7—

SiemensSIMATIC WinCC V180 to < V18 Update 2—

SiemensSIMOCODE ES V160 to < V16 Update 7—

SiemensSIMOCODE ES V170 to < V17 Update 7—

SiemensSIMOCODE ES V180 to < V18 Update 2—

SiemensSIMOTION SCOUT TIA V5.4 SP10 to < *—

SiemensSIMOTION SCOUT TIA V5.4 SP30 to < *—

SiemensSIMOTION SCOUT TIA V5.5 SP10 to < *—

SiemensSINAMICS Startdrive V160 to < *—

SiemensSINAMICS Startdrive V170 to < *—

SiemensSINAMICS Startdrive V180 to < *—

SiemensSIRIUS Safety ES V170 to < V17 Update 7—

SiemensSIRIUS Safety ES V180 to < V18 Update 2—

SiemensSIRIUS Soft Starter ES V170 to < V17 Update 7—

SiemensSIRIUS Soft Starter ES V180 to < V18 Update 2—

SiemensSoft Starter ES V160 to < V16 Update 7—

SiemensTIA Portal Cloud V3.00 to < V18 Update 2—

siemenssimatic_step_7_safety0 to < v16update7, 0 to < v17update7, 0 to < v18update2—

siemenssimatic_step_70 to < v16update7, 0 to < v17update7, 0 to < v18update2—

siemenssimatic_wincc_unified0 to < v16update7, 0 to < v17update7, 0 to < v18update2—

siemenssimatic_wincc0 to < v17.7, 0 to < v18update2—

siemenssimocode_es0 to < v16update7, 0 to < v17update7, 0 to < v18update2—

siemenssimotion_scout_tiav5.4sp1, v5.4sp3, v5.5sp1—

siemenssinamics_startdrivev17, v18—

siemenssirius_safety_es0 to < v17update7, 0 to < v18update2—

siemenssirius_soft_starter_es0 to < v17update7, 0 to < v18update2—

siemenssoft_starter_es0 to < v16update7—

siemenstia_portal_cloud_v3.00 to < v18update2—

06 References

cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-779936.html