All vulnerabilities

Servers and applications

CVE-2021-3422

The lack of validation of a key-value field in the Splunk-to-Splunk protocol results in a denial-of-service in Splunk Enterprise instances configured to index Universal Forwarder traffic. The vulnerability impacts Splunk Enterprise versions before 7.3.9, 8.0 versions before 8.0.9, and 8.1 versions before 8.1.3. It does not impact Universal Forwarders. When Splunk forwarding is secured using TLS…

Severity
High 7.5
Published
25 Mar 2022
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
7.3.9, 8.0.9, 8.1.3
Sources
NVD

Affected software

SoftwareAffected versions
Splunk EnterpriseServers and applications · cpe:a:splunk:splunk
  • Every version before 7.3.9
  • From 8.0 before 8.0.9
  • From 8.1 before 8.1.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-3422
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-3422