All vulnerabilities
CVE-2026-76299

Security Hardening in Splunk Enterprise - October 2026

Splunk Splunk EnterpriseApplications & CMS
Open in ThreatlineRecord JSON
CVSS
9.9Critical
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.25%Chance of exploitation activity in the next 30 days, higher than 15% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in10.4.4Also 10.2.8, 10.0.11 and 1 moreCVE List
Published21 Oct 2026Updated 22 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

As part of Cisco's ongoing commitment to proactive security and product quality, Cisco has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76299 are related to improper access control and are grouped under the Common Weakness Enumeration (CWE) CWE-284.

Text from CVE List

Affected versions 4

  • Splunk Enterpriseaffected: 10.4 before 10.4.4CVE List
  • Splunk Enterpriseaffected: 10.2 before 10.2.8CVE List
  • Splunk Enterpriseaffected: 10.0 before 10.0.11CVE List
  • Splunk Enterpriseaffected: 9.4 before 9.4.16CVE List

References 1