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CVE-2017-14467

48
FAUCET Score

CVE-2017-14467 is a critical access control vulnerability affecting Allen Bradley Micrologix 1400 Series B controllers with firmware FRN 21.2 and earlier. This flaw allows an unauthenticated attacker to send specially crafted packets, enabling unauthorized read/write operations. The vulnerability carries a CVSS score of 9.8 (Critical) due to its network-based attack vector, low complexity, and potential for complete compromise, including sensitive information disclosure, modification of settings, or alteration of ladder logic. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the high severity warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 21.2CPE matchmatch criteria
cpe:2.3:o:rockwellautomation:micrologix_1400_b_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

10.0CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
36.64%
Probability of exploitation in next 30 days
EPSS Percentile
98.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.3664 is in the 96th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

projectdiscoverypatch availablevia llm_extracted
Fixed in: FRN 21.004 or later
View patch

Vendor Advisories (1)

projectdiscoveryllm-projectdiscovery-9c764493b317a483

Perform online edits to ladder logic

Apr 16, 2018

References

talosintelligence.com / vulnerability_reports/TALOS-2017-0443
ExploitThird Party Advisory