CVE Explorer

CVE-2026-9653

A denial-of-service security issue exists across all the 1756-EN2, EN3, and ENBT communication module due to improper validation of CIP Implicit Connection packets. An attacker on the network can exploit this by sending crafted packets to continuously disrupt device connections, though device connections will recover immediately after.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:891d74922f7c3129863eb8834dfadfdb6bca267b90e410879a2ff420d04dfc8d

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"1756-EN2, 1756-EN3","vendor":"Rockwell Automation","versions":[{"status":"affected","version":"12.001 and before"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:b8220fc813ec7677b3925fe6b933c450318086a2eb20acf1abfd07bcdef05d7f · sha256:03ec60cfc0683e48… · /containers/cna/affected/0

{"defaultStatus":"unaffected","product":"1756-ENBT","vendor":"Rockwell Automation","versions":[{"status":"affected","version":"6.006"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:b8220fc813ec7677b3925fe6b933c450318086a2eb20acf1abfd07bcdef05d7f · sha256:03ec60cfc0683e48… · /containers/cna/affected/1

Affected products and versions

2 source assertions

{"defaultStatus":"unaffected","product":"1756-EN2, 1756-EN3","vendor":"Rockwell Automation","versions":[{"status":"affected","version":"12.001 and before"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:b8220fc813ec7677b3925fe6b933c450318086a2eb20acf1abfd07bcdef05d7f · sha256:03ec60cfc0683e48… · /containers/cna/affected/0

{"defaultStatus":"unaffected","product":"1756-ENBT","vendor":"Rockwell Automation","versions":[{"status":"affected","version":"6.006"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:b8220fc813ec7677b3925fe6b933c450318086a2eb20acf1abfd07bcdef05d7f · sha256:03ec60cfc0683e48… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"…

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:b8220fc813ec7677b3925fe6b933c450318086a2eb20acf1abfd07bcdef05d7f · sha256:03ec60cfc0683e48… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-354","description":"CWE-354 Improper validation of integrity check value","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:b8220fc813ec7677b3925fe6b933c450318086a2eb20acf1abfd07bcdef05d7f · sha256:03ec60cfc0683e48… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"url":"https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1780.html"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b8220fc813ec7677b3925fe6b933c450318086a2eb20acf1abfd07bcdef05d7f · sha256:03ec60cfc0683e48… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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