01 Record

CVE-2021-30065

On Schneider Electric ConneXium Tofino Firewall TCSEFEA23F3F22 before 03.23, TCSEFEA23F3F20/21, and Belden Tofino Xenon Security Appliance, crafted ModBus packets can bypass the ModBus enforcer. NOTE:

HighPUBLISHEDCNA: mitre

CNA base score7.5 CVSS v3.xCVSS:3.1/AC:L/AV:N/A:N/C:N/I:H/PR:N/S:U/UI:N

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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: 0.88% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 58.7% 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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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: 2022-04-03 21:59Z4 YR AGO
Last updated: 2024-08-03 22:24Z2 YR AGO
Reserved: 2021-04-02
Assigning CNA: mitre
Record state: PUBLISHED
Severity: High (CVSS 7.5)
CNA CVSS vector: CVSS:3.1/AC:L/AV:N/A:N/C:N/I:H/PR:N/S:U/UI:N
Weaknesses: No CWE assigned
Data version: 5.1
Document digest: 0033dffcbd18c9b9f60aad65b429fcd496fda67faca8b67e1b535ab86379fab5