Vulnerability Intelligence Report
Security Hardening in Splunk Enterprise - October 2026
CVE-2026-76302
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-2026-76302 are related to improper neutralization and are grouped under the Common Weakness Enumeration (CWE) CWE-707.
No Active Exploit Signals
CVSS Base Score
9.9
CRITICAL
Exploitability:3.2
Impact Score:6.1
EPSS Probability:0.19%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
—
Weaknesses (CWE)
CWE-707 ↗The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties at met before being read from an upstream component or sent to a downstream component.
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Splunk | Splunk Enterprise | 10.4 < 10.4.4 (affected), 10.2 < 10.2.8 (affected), 10.0 < 10.0.11 (affected), 9.4 < 9.4.16 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.189%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Cisco Systems, Inc. · Hosted Service · USA |
| Reserved | 2026-08-19T12:02:03 |
| Published | 2026-10-21T22:52:03 |
| Patch Date | 2026-10-21 |
| Last Updated | 2026-10-22T13:11:39 |
Community Chatter & Buzz