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High8.1Splunk

High [CVE-2021-26253] potential vulnerability in Splunk Enterprise's implementation of DUO MFA

This high-severity Splunk advisory covers CVE-2021-26253 affecting Splunk Enterprise.

CVE-2021-26253 Published May 6, 2022Updated by vendor Jun 17, 2026
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SplunkSplunk Enterprise
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Summary

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.

Affected versions
  • 8.1.6

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • 8.1.6

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation

Upgrade to a fixed release: 8.1.6. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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