Vulnerability Intelligence Report
Security Hardening in Splunk Enterprise - October 2026
CVE-2026-76301
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-2026-76301 are related to protection mechanism failure and are grouped under the Common Weakness Enumeration (CWE) CWE-693.
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:0.17%
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-693 ↗The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
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
0.170%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Cisco Systems, Inc. · Hosted Service · USA |
| Reserved | 2026-08-19T12:02:03 |
| Published | 2026-10-21T22:52:02 |
| Patch Date | 2026-10-21 |
| Last Updated | 2026-10-28T02:04:50 |
Community Chatter & Buzz