Security readout for executives and security teams
Plain-English summary
This CVE affects Allen-Bradley MicroLogix 1400 Series B controllers. An unauthenticated network attacker could read or change controller data, settings, or ladder logic when the keyswitch is in REMOTE or PROG. For an industrial environment, that can mean operational disruption and unauthorized process changes.
Executive priority
Prioritize this urgently if affected controllers are present in production or reachable beyond tightly controlled engineering networks. The business concern is unauthorized process modification or outage, not just data theft. If devices are isolated and keyswitch use is controlled, urgency remains high but exposure may be reduced.
Technical view
The provided sources describe an access-control flaw in data, program, and function file permissions in MicroLogix 1400 Series B FRN 21.2 and earlier. Specially crafted unauthenticated packets can trigger read or write operations with high confidentiality, integrity, and availability impact. A fault state is documented when ladder logic data is overwritten.
Likely exposure
Exposure is most likely where affected MicroLogix 1400 Series B controllers are reachable from untrusted or broadly accessible networks, especially while the keyswitch is in REMOTE or PROG. The bundle does not identify internet exposure statistics or specific deployed environments.
Exploitation context
The CVSS score is 10.0 because exploitation is network-based, unauthenticated, low complexity, and needs no user interaction. The provided bundle marks KEV as false and does not cite active exploitation. Treat this as severe exposure risk, not confirmed exploitation activity.
Researcher notes
Evidence is limited to the CVE bundle and Talos reference listed in the prompt. Do not assume a vendor patch, exploit availability, or exploitation in the wild from this data alone. Focus validation on affected FRN identification, reachable network paths, keyswitch state, and integrity of controller programs.
Mitigation direction
- Inventory MicroLogix 1400 Series B controllers and record FRN versions.
- Check Rockwell/Allen-Bradley guidance for firmware or compensating controls.
- Restrict controller network access to trusted engineering hosts only.
- Keep keyswitch out of REMOTE or PROG when operationally possible.
- Back up and verify ladder logic and controller settings.
Validation and detection
- Confirm whether any controllers run Series B FRN 21.2 or earlier.
- Verify controller network paths from corporate, wireless, remote-access, and vendor networks.
- Review logs for unexpected engineering access or configuration changes.
- Compare current ladder logic and settings against known-good backups.
- Document keyswitch state practices for affected operational areas.
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.
CVE-2017-14463 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
- 10 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/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.
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:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H3.96Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
10CriticalVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0443CVE reference · x_refsource_MISC
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.