What’s Vulnerable › Vulnerabilities
CVE-2026-76300: Security Hardening in Splunk Enterprise - October 2026
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-21 · updated 2026-10-26
- Weakness: CWE-664
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-2026-76300 are related to improper control of a resource through its lifetime and are grouped under the Common Weakness Enumeration (CWE) CWE-664.
Affected products
- Splunk Enterprise: from 10.4 before 10.4.4; from 10.2 before 10.2.8; from 10.0 before 10.0.11; from 9.4 before 9.4.16 — fixed in 10.4.4, 10.2.8, 10.0.11, 9.4.16
How to fix
Upgrade to a fixed version: Splunk Enterprise 10.4.4, 10.2.8, 10.0.11, 9.4.16. Check the vendor advisory for mitigations.
References
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