// For flags

CVE-2021-26264

Emerson DeltaV Missing Authentication for Critical Function

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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

Un script especialmente diseñado podría hacer que DeltaV Distributed Control System Controllers (todas las versiones) se reinicien y causar una condición de denegación de servicio

*Credits: Sharon Brizinov of Claroty reported these vulnerabilities to Emerson.
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Adjacent
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-12-16 CVE Reserved
  • 2022-01-28 CVE Published
  • 2023-08-21 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-306: Missing Authentication for Critical Function
CAPEC
References (1)
URL Tag Source
https://www.cisa.gov/uscert/ics/advisories/icsa-21-355-04 Mitigation
URL Date SRC
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Emerson
Search vendor "Emerson"
 Deltav Workstation
Search vendor "Emerson" for product "Deltav Workstation"
--
Affected
Emerson
Search vendor "Emerson"
 Deltav Distributed Control System
Search vendor "Emerson" for product "Deltav Distributed Control System"
--
Affected