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01 Record

CVE-2018-14821

Rockwell Automation RSLinx Classic Versions 4.00.01 and prior. This vulnerability may allow a remote, unauthenticated threat actor to intentionally send a malformed CIP packet to Port 44818, causing

UnratedPUBLISHEDCNA: icscert
CNA base scoreUnratedNo CNA CVSS vector

02 Description

Rockwell Automation RSLinx Classic Versions 4.00.01 and prior. This vulnerability may allow a remote, unauthenticated threat actor to intentionally send a malformed CIP packet to Port 44818, causing

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
4.49% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 91.0% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2018-09-20 20:00Z8 YR AGO
Last updated
2024-09-17 00:35Z2 YR AGO
Reserved
2018-08-01
Assigning CNA
icscert
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-122Heap-based Buffer OverflowVariant
  • CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
Data version
5.1
Document digest
68463db5ac174a386040400ec6e516bb7dbfd2da22ce02028f43396ef82bb181

05 Affected products

VendorProductVersionsPlatforms
Rockwell AutomationRSLinx Classic4.00.01 and prior—

06 References