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-2026-76302 are related to improper neutralization and are grouped under the Common Weakness Enumeration (CWE) CWE-707.
Published: 2026-10-21
Score: 9.9 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Potential Disclosure of Sensitive Information
Action: Apply Patch
AI Analysis

Impact

The vulnerability is a case of improper neutralization of sensitive information, where internal logic failures could expose data that should remain protected. This weakness aligns with CWE-707 and can lead to unauthorized access to confidential information.

Affected Systems

The affected product is Splunk Enterprise from Splunk. Versions prior to 10.4.4, 10.2.8, 10.0.11, and 9.4.16 are impacted. All installations of Splunk Enterprise below these version thresholds should be considered vulnerable.

Risk and Exploitability

The EPSS score is reported as < 1%, indicating a very low but non‑zero probability of exploitation. The vulnerability is not listed in the CISA KEV catalog, indicating no publicly known exploitation activity to date. The severity is quantified by a CVSS score of 9.9, indicating a high risk level. Nonetheless, the company recommends upgrading promptly because the flaw is an internal security hardening issue that could facilitate data exposure. The likely attack vector is unspecified; it could arise from system configuration or an application‑level failure. Until verified, treat the vulnerability as a potential threat.

Generated by OpenCVE AI on October 22, 2026 at 16:59 UTC.

Remediation

Vendor Solution

Upgrade Splunk Enterprise to versions 10.4.4, 10.2.8, 10.0.11, and 9.4.16 or higher.


OpenCVE Recommended Actions

  • Upgrade Splunk Enterprise to at least 10.4.4, 10.2.8, 10.0.11, or 9.4.16, as specified by Splunk.
  • Monitor Splunk logs for unusual activity that might indicate exploitation attempts, and apply additional access controls if required.
  • Consult Splunk's security hardening guide to apply any additional configuration changes that reduce data exposure risk.

Generated by OpenCVE AI on October 22, 2026 at 16:59 UTC.

Tracking

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Advisories

No advisories yet.

History

Thu, 22 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 22 Oct 2026 07:45:00 +0000

Type Values Removed Values Added
First Time appeared Splunk
Splunk splunk Enterprise
Vendors & Products Splunk
Splunk splunk Enterprise

Wed, 21 Oct 2026 23:00:00 +0000

Type Values Removed Values Added
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-2026-76302 are related to improper neutralization and are grouped under the Common Weakness Enumeration (CWE) CWE-707.
Title Security Hardening in Splunk Enterprise - October 2026
Weaknesses CWE-707
References

Subscriptions

Splunk Splunk Enterprise
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-10-22T13:11:39.459Z

Reserved: 2026-08-19T12:02:03.623Z

Link: CVE-2026-76302

cve-icon Vulnrichment

Updated: 2026-10-22T13:11:32.421Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-21T23:17:28.273

Modified: 2026-10-22T16:57:10.180

Link: CVE-2026-76302

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-22T17:00:10Z

Weaknesses