LiveActive security incident?Get immediate response
CVE Record

CVE-2017-12090: An exploitable denial of service vulnerability exists in the processing of snmp-set commands of the Allen B...

An exploitable denial of service vulnerability exists in the processing of snmp-set commands of the Allen Bradley Micrologix 1400 Series B FRN 21.2 and below. A specially crafted snmp-set request, when sent without associated firmware flashing snmp-set commands, can cause a device power cycle resulting in downtime for the device. An attacker can send one packet to trigger this vulnerability.

HighCVSS 7.7Not KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This issue can cause certain Allen Bradley Micrologix 1400 Series B controllers to power cycle, creating downtime. The sources describe a network-triggered denial of service through SNMP set handling. It does not indicate data theft or control logic modification.

Executive priority

Prioritize sites where affected controllers support critical production, safety-adjacent, or high-availability operations. The business risk is downtime from a low-complexity network-triggered reboot condition, especially if management interfaces are reachable beyond trusted OT administration paths.

Technical view

CVE-2017-12090 affects Micrologix 1400 Series B FRN 21.2 and below. A specially crafted SNMP set request, without associated firmware flashing SNMP set commands, can cause a device power cycle. CVSS 3.0 is 7.7, with network access, low privileges, no user interaction, and high availability impact.

Likely exposure

Exposure is most relevant for industrial networks running affected Micrologix 1400 Series B firmware where SNMP set operations are reachable by low-privileged users or insufficiently restricted management paths.

Exploitation context

The bundle states an attacker can trigger the condition with one crafted packet, but it does not cite active exploitation, KEV listing, exploit publication, or observed campaigns. Treat exploitation as plausible where SNMP set access is exposed, not confirmed in the wild.

Researcher notes

The source bundle supports high availability impact, network attack vector, low privileges, and affected firmware statements. It does not provide a named patch, mitigation version, exploit status, or CISA KEV confirmation. Avoid expanding scope beyond Micrologix 1400 Series B FRN 21.2 and below.

Mitigation direction

  • Inventory Allen Bradley Micrologix 1400 Series B controllers and record FRN levels.
  • Prioritize devices at FRN 21.2 or below for vendor guidance review.
  • Restrict SNMP set access to trusted management hosts only.
  • Segment controller management traffic from general IT and untrusted networks.
  • Check vendor or Talos guidance for firmware remediation before changing production controllers.
  • Monitor for unexpected controller power cycles or availability drops.

Validation and detection

  • Confirm whether any Micrologix 1400 Series B devices run FRN 21.2, 21.0, or 15.
  • Verify SNMP set operations are blocked from non-management networks.
  • Review operational logs for unexplained power cycles or reboots.
  • Confirm maintenance procedures include vendor guidance for affected firmware.
  • Document compensating controls where firmware updates are delayed.
Prepared
Confidence
high
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · low confidence lookup

CVE-2017-12090 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
7.7 (3.0)
Known Exploited
No
Published

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

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
7.7CVSS 3.0HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H3.14Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

7.7High
CVSS 3.0 vector shape for CVE-2017-12090Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
TalosAllen BradleyAllen Bradley Micrologix 1400 Series B FRN 21.2, Allen Bradley Micrologix 1400 Series B FRN 21.0, Allen Bradley Micrologix 1400 Series B FRN 15Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.