Security readout for executives and security teams
Plain-English summary
CVE-2017-14465 is a critical access-control flaw in Allen Bradley MicroLogix 1400 Series B firmware through FRN 21.2. An unauthenticated network packet may allow reading or changing PLC data, settings, or ladder logic. In REMOTE keyswitch state, forced inputs or outputs could cause unpredictable physical process behavior.
Executive priority
Treat this as high urgency for industrial environments using the affected PLCs. The business risk is unauthorized control or modification of physical process logic, not just data exposure. Prioritize asset discovery, network restriction, and vendor remediation review.
Technical view
The vulnerability affects MicroLogix 1400 Series B FRN 21.2 and earlier. Talos describes unauthenticated packet-triggered read/write operations against data, program, and function file permissions. CVSS 3.0 is 10.0 with network attack vector, no privileges, no user interaction, changed scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely limited to environments running affected Allen Bradley MicroLogix 1400 Series B controllers, especially where controller services are reachable from untrusted or broadly accessible networks and the keyswitch is in REMOTE state.
Exploitation context
The bundle supports unauthenticated remote triggering by specially crafted packets, but it does not cite active exploitation. CISA KEV status is false in the provided data, so active exploitation should not be assumed from these sources.
Researcher notes
Evidence is strongest for affected product, impact, attack preconditions, and CVSS severity. The provided bundle does not name a patch, workaround, or active exploitation. Avoid broad claims beyond MicroLogix 1400 Series B FRN 21.2 and earlier.
Mitigation direction
- Identify affected MicroLogix 1400 Series B controllers and firmware revisions.
- Check Rockwell/Allen-Bradley guidance for firmware updates or compensating controls.
- Restrict network access to PLC management and programming interfaces.
- Review operational need for REMOTE keyswitch state on exposed controllers.
- Monitor for unauthorized configuration, ladder logic, or forced I/O changes.
Validation and detection
- Inventory MicroLogix 1400 Series B assets and confirm FRN versions.
- Verify whether affected PLC interfaces are reachable from user, vendor, or internet-connected networks.
- Confirm keyswitch state and document where REMOTE mode is operationally required.
- Review change records for unexpected setting, program, or ladder logic modifications.
- Check monitoring logs for unauthorized PLC programming or data access attempts.
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-2017-14465 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.