Security readout for executives and security teams
Plain-English summary
This is a high-severity code execution issue in Siemens engineering software. If an attacker can get a user to open or process malicious input in an affected application, the attacker may run code inside that application. The main business concern is compromise of engineering workstations used for industrial control projects.
Executive priority
Treat this as a priority engineering-workstation risk, especially in environments where project files move between vendors, contractors, or sites. It is high impact but not described as wormable or actively exploited in the supplied sources.
Technical view
Affected Siemens applications deserialize user-controllable input with insufficient restriction of .NET BinaryFormatter, a known unsafe pattern mapped to CWE-502. The CVSS 4.0 vector is local, low complexity, no privileges required, and requires user interaction, with high impact to confidentiality, integrity, and availability of the vulnerable application.
Likely exposure
Exposure is most likely on engineering workstations running SIMATIC PCS neo V4.0, STEP 7 V16, STEP 7 V17, or STEP 7 V18 before Update 2. The bundle does not indicate a remotely reachable service; user interaction is required.
Exploitation context
The source bundle does not report known active exploitation, and KEV status is false. Exploitation would require local attack conditions and user interaction with attacker-controlled input handled by the affected Siemens application. No public exploit status is provided in the supplied sources.
Researcher notes
The key weakness is unsafe BinaryFormatter deserialization of user-controllable data. The supplied evidence identifies affected products and CVSS characteristics but does not provide exploit indicators, detailed attack vectors, or complete product remediation details beyond STEP 7 V18 affected-before-Update-2 wording.
Mitigation direction
- Inventory Siemens PCS neo and STEP 7 installations on engineering workstations.
- Update STEP 7 V18 to Update 2 or later where applicable.
- Check Siemens SSA-825651 for current product-specific remediation guidance.
- Restrict opening untrusted project files or inputs in affected tools.
- Limit engineering workstation access and enforce least-privilege user accounts.
- Monitor engineering endpoints for unexpected child processes or code execution.
Validation and detection
- Confirm installed versions for PCS neo and STEP 7 V16, V17, and V18.
- Verify whether STEP 7 V18 systems are below Update 2.
- Review engineering workflows for receipt of untrusted project files.
- Check endpoint telemetry around affected application launches and crashes.
- Confirm remediation status against Siemens advisory SSA-825651.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-502: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2022-45147 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.5 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.5HighVector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- https://cert-portal.siemens.com/productcert/html/ssa-825651.htmlCVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Deserialization of Untrusted Data
Deserialization of Untrusted Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.