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01 Record

CVE-2021-27196

Specially Crafted IEC 61850 Protocol Sequence Vulnerability

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

02 Description

Specially Crafted IEC 61850 Protocol Sequence Vulnerability

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
1.57% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 74.9% 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: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
2021-06-14 21:20Z5 YR AGO
Last updated
2024-09-17 03:17Z2 YR AGO
Reserved
2021-02-12
Assigning CNA
mitre
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-20Improper Input ValidationClass
Data version
5.1
Document digest
fdc11e7d272d0069516f7e939fd1db81bb403d40f51840fdbf84e513c173dcb5

05 Affected products

VendorProductVersionsPlatforms
hitachienergyfox615_tego1Not specified—
hitachienergyfox615_tego1_firmwareNot specified—
hitachienergygms600Not specified—
hitachienergygms600_firmwareNot specified—
hitachienergymodular_switchgear_monitoringNot specified—
hitachienergymodular_switchgear_monitoring_firmwareNot specified—
hitachienergypwc600Not specified—
hitachienergypwc600_firmwareNot specified—
hitachienergyreb500Not specified—
hitachienergyreb500_firmwareNot specified—
hitachienergyrelion_650Not specified—
hitachienergyrelion_650_firmwareNot specified—
hitachienergyrelion_670Not specified—
hitachienergyrelion_670_firmwareNot specified—
hitachienergyrelion_sam600-ioNot specified—
hitachienergyrelion_sam600-io_firmwareNot specified—
hitachienergyrtu500Not specified—
hitachienergyrtu500_firmwareNot specified—

06 References

07 Remediation

Refer to the cybersecurity advisories at https://www.hitachiabb-powergrids.com/offering/solutions/cybersecurity/alerts-and-notifications