// For flags

CVE-2021-26253

Bypass of Splunk Enterprise's implementation of DUO MFA

Severity Score

8.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A potential vulnerability in Splunk Enterprise's implementation of DUO MFA allows for bypassing the MFA verification in Splunk Enterprise versions before 8.1.6. The potential vulnerability impacts Splunk Enterprise instances configured to use DUO MFA and does not impact or affect a DUO product or service.

Una posible vulnerabilidad en la implementación de DUO MFA de Splunk Enterprise permite omitir la verificación MFA en las versiones de Splunk Enterprise anteriores a 8.1.6. La vulnerabilidad potencial afecta a las instancias de Splunk Enterprise configuradas para usar DUO MFA y no impacta ni afecta a un producto o servicio de DUO

*Credits: Sanket Bhimani
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-11-03 CVE Reserved
  • 2022-05-06 CVE Published
  • 2023-11-27 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-287: Improper Authentication
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Splunk
Search vendor "Splunk"
 Splunk
Search vendor "Splunk" for product "Splunk"
 >= 8.1.0 < 8.1.6
Search vendor "Splunk" for product "Splunk" and version " >= 8.1.0 < 8.1.6"
enterprise
Affected