Security readout for executives and security teams
Plain-English summary
Certain PHOENIX CONTACT ILC controllers can be knocked offline by unauthenticated network traffic. The reported impact is loss of device availability, not data theft or code execution. For businesses using these controllers in OT environments, the urgency depends on whether the devices are reachable from untrusted or poorly segmented networks.
Executive priority
Treat this as high priority for sites where affected ILC controllers support production, safety-adjacent, or availability-critical operations. Prioritize segmentation and vendor guidance review before routine maintenance windows.
Technical view
CVE-2018-25112 is a CWE-770 uncontrolled resource consumption issue in the IEC 61131 program handling of affected ILC devices. A remote unauthenticated attacker can generate large volumes of network traffic that the ILC must process, causing denial of service. CVSS 3.1 is 7.5 with network, low-complexity, no-privilege, no-user-interaction characteristics.
Likely exposure
Exposure is most likely where PHOENIX CONTACT ILC 131, ILC 151, ILC 171, or ILC 191 ETH devices are reachable from enterprise, vendor, or external networks. Evidence provided does not identify internet exposure prevalence.
Exploitation context
The source bundle does not report active exploitation, and the CVE is not marked KEV. The vulnerability is still operationally important because exploitation requires only network access and targets availability of industrial controller devices.
Researcher notes
Sources identify a resource-consumption denial-of-service condition, but do not provide patch details in the supplied bundle. Avoid assuming code execution, data compromise, or active exploitation. Validation should focus on asset presence, reachability, and operational dependency.
Mitigation direction
- Check the CERT@VDE vendor advisory for supported remediation guidance.
- Inventory affected PHOENIX CONTACT ILC models in OT environments.
- Restrict access to ILC devices from untrusted networks.
- Segment OT controller networks from enterprise and external access.
- Monitor for abnormal traffic volumes toward affected controllers.
Validation and detection
- Confirm whether listed ILC models exist in the environment.
- Map which networks can reach each affected controller.
- Review device and network logs for traffic spikes or DoS symptoms.
- Compare deployed products and versions against vendor advisory scope.
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-770: 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-2018-25112 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
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.
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:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://certvde.com/en/advisories/VDE-2018-012/CVE reference · vendor-advisory
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.