Security readout for executives and security teams
Plain-English summary
This CVE affects Allen Bradley MicroLogix 1400 Series B controllers. An unauthenticated network packet can read or change controller files, including settings and ladder logic, when the keyswitch is in REMOTE or PROG. For operations, this is a high-impact ICS issue because it can affect confidentiality, integrity, and availability of controller behavior.
Executive priority
Prioritize this for any site using affected MicroLogix 1400 controllers in production. The business risk is unauthorized controller modification or faulting, which can disrupt operations. Urgency depends on actual reachability and whether controllers are routinely left in REMOTE or PROG.
Technical view
CVE-2017-14469 is an access control flaw in data, program, and function file permissions for MicroLogix 1400 Series B FRN 21.2 and earlier listed versions. The CVSS v3.0 score is 10.0. The source says specially crafted unauthenticated packets can trigger read or write operations and invalid user fault routine values may later fault the device.
Likely exposure
Exposure is most likely where affected MicroLogix 1400 Series B controllers are reachable over a network from untrusted hosts or shared plant networks, especially while in REMOTE or PROG. The bundle does not prove internet exposure or deployment prevalence.
Exploitation context
The source describes unauthenticated network access with low complexity and no user interaction. CISA KEV status in the bundle is false, and no provided source confirms active exploitation. Treat exploitability as plausible from the vendor-independent report, but do not claim exploitation in the wild from this bundle.
Researcher notes
Evidence is limited to the CVE data and Talos reference in the bundle. The affected product attribution in the bundle lists vendor as Talos, but the described equipment is Allen Bradley MicroLogix 1400 Series B. No CWE, patch version, or confirmed exploitation evidence is supplied.
Mitigation direction
- Check Rockwell/Allen-Bradley guidance for fixed firmware or official mitigations.
- Inventory MicroLogix 1400 Series B firmware, especially FRN 21.2 and earlier listed versions.
- Restrict controller network access to trusted engineering and operations hosts.
- Avoid leaving affected controllers in REMOTE or PROG except for authorized maintenance.
- Monitor for unexpected setting or ladder logic changes.
Validation and detection
- Confirm model, Series B status, and firmware revision for each MicroLogix 1400 controller.
- Review network paths to controllers from corporate, remote access, and vendor networks.
- Verify operational procedures for keyswitch state management.
- Compare ladder logic and controller settings against known-good backups.
- Check security logs for unauthorized engineering workstation or controller access.
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-2017-14469 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.