01 Record

CVE-2021-22743

Improper Check for Unusual or Exceptional Conditions vulnerability exists in Triconex TCM 4351B installed on Tricon V11.3.x systems that could cause module reset when TCM receives malformed TriStation

UnratedPUBLISHEDCNA: schneider

CNA base scoreUnratedNo CNA CVSS vector

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02 Description

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: 0.22% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 12.8% of scored records. A rank, not a probability.
NVD base score: 3.9 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:P/AC:L/PR:H/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

2021-05-26 19:20Z5 YR AGO

Last updated

2024-08-03 18:51Z2 YR AGO

Reserved

2021-01-06

Assigning CNA

schneider

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-754Improper Check for Unusual or Exceptional ConditionsClass

Data version

5.1

Document digest

46291ed60539a4e60013d9aacdbcfb5d5ea783925cfb601f2ed8bfb5a7fcd997

05 Affected products

VendorProductVersionsPlatforms

n/aTriconex TCM 4351B installed on Tricon V11.3.x systems.Triconex TCM 4351B installed on Tricon V11.3.x systems—

06 References

download.schneider-electric.comhttps://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-130-03x_refsource_MISC