Security readout for executives and security teams
Plain-English summary
This flaw lets an unauthenticated remote attacker upload malicious control logic to affected PHOENIX CONTACT classic line controllers, potentially taking full control of the device. For industrial environments, that can affect process integrity, availability, and safety-dependent operations if exposed controllers are reachable.
Executive priority
Treat this as an urgent OT risk-review item, especially for exposed or safety-relevant controller deployments. Lack of confirmed exploitation does not lower urgency much because the unauthenticated remote impact is full device control.
Technical view
CVE-2022-31800 is insufficient verification of data in devices based on ProConOS or ProConOS eCLR. The CVSS 3.1 score is 9.8 because attack is network-accessible, low complexity, requires no privileges or user interaction, and impacts confidentiality, integrity, and availability.
Likely exposure
Exposure is limited to listed PHOENIX CONTACT classic line products, including ILC, AXC, RFC, PC WORX, and FC models marked as all versions. Highest risk is where engineering or controller interfaces are reachable from untrusted networks.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. The vulnerability is still serious because the described impact is remote unauthenticated upload of malicious logic and full device control.
Researcher notes
Evidence identifies CWE-345 and broad all-version product impact, but the provided bundle does not include patch details, protocol specifics, exploit telemetry, or vendor mitigation text. Avoid assuming fixes beyond the vendor advisory.
Mitigation direction
- Inventory environments for affected PHOENIX CONTACT models listed in VDE-2022-025.
- Review PHOENIX CONTACT and VDE guidance for supported fixes, replacements, or compensating controls.
- Remove affected controllers from untrusted network paths while vendor guidance is assessed.
- Restrict engineering access to trusted management networks and authorized personnel only.
- Prioritize remediation where controllers support critical process or safety operations.
Validation and detection
- Confirm whether deployed controllers match the affected product list and all-version scope.
- Check whether controller or engineering interfaces are reachable from corporate, remote, or internet-facing networks.
- Review change-management records for unexpected logic uploads or unauthorized controller modifications.
- Verify remediation decisions against VDE-2022-025 and the CVE record.
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-345: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCVE-2022-31800 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
SSVC decision data
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9CERTVDEVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://cert.vde.com/en/advisories/VDE-2022-025/CVE reference, CERTVDE · x_refsource_CONFIRM
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.