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CVE-2021-26264

Emerson DeltaV Missing Authentication for Critical Function

Published: Jan 28, 2022Updated: Apr 17, 2025 Sources: CVE List NVD csafCWE-306
6.1MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 91.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only
Self-Check
Not available

Description

A specially crafted script could cause the DeltaV Distributed Control System Controllers (All Versions) to restart and cause a denial-of-service condition.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:AAC:HPR:NUI:NS:CC:NI:NA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-306

Affected Products

emerson
commercial·USaka wireless 1410, emerson deltav
deltav workstation
ICS / OT / IoT
deltav distributed control system
ICS / OT / IoT
and 1 more affected products View all →

Exploitability

Workaround Available

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://www.cisa.gov/uscert/ics/advisories/icsa-21-355-04
cisa.gov
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2021/icsa-21-355-04.json
raw.githubusercontent.com
https://www.cisa.gov/news-events/ics-advisories/icsa-21-355-04
cisa.gov
and 7 more references View all →

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