Improper Neutralization in Splunk Enterprise
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
Cisco's internal security review of Splunk Enterprise found multiple vulnerabilities, tracked by CVE-2026-76284 and grouped under CWE-707 (Improper Neutralization). The CVSS 3.1 base score is 9.8 (CRITICAL), with network attack vector, low complexity, no privileges or user interaction required, and high confidentiality, integrity and availability impact. CISA's SSVC data marks the issue as automatable with total technical impact and no exploitation observed. It is not listed in CISA KEV.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
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-2026-76284 are related to improper neutralization and are grouped under the Common Weakness Enumeration (CWE) CWE-707.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Splunk | Splunk Enterprise | 10.4 to before 10.4.3; 10.2 to before 10.2.7; 10.0 to before 10.0.10; 9.4 to before 9.4.15 | 10.4.3, 10.2.7, 10.0.10, 9.4.15 | Patch available | CNA |
- Splunk Enterprise VendorSplunk Affected 10.4 to before 10.4.3; 10.2 to before 10.2.7; 10.0 to before 10.0.10; 9.4 to before 9.4.15 Fixed in 10.4.3, 10.2.7, 10.0.10, 9.4.15 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* | 9.4.0 to before 9.4.15; 10.0.0 to before 10.0.10; 10.2.0 to before 10.2.7; 10.4.0 to before 10.4.3 | Vulnerable | Splunk |
- cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* Versions 9.4.0 to before 9.4.15; 10.0.0 to before 10.0.10; 10.2.0 to before 10.2.7; 10.4.0 to before 10.4.3 Vulnerable ·Splunk
Remediation
Upgrade Splunk Enterprise to 10.4.3 for the 10.4 branch, 10.2.7 for 10.2, 10.0.10 for 10.0, or 9.4.15 for 9.4. Versions before these fixed releases in each branch are affected.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
- Fix · CNA Splunk Enterprise (Splunk) Fixed in 10.4.3, 10.2.7, 10.0.10, 9.4.15
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Splunk Enterprise 10.0.10, 10.2.7 and 2 more versions
14 records Highest priority Priority MEDIUM 3 MEDIUM, 11 LOW
Other records, highest priority first
- TI-2026-69309 Coding standard flaws in Splunk Enterprise allow remote attacksPriority MEDIUM 49
- TI-2026-69306 Resource lifetime control flaw in Splunk EnterprisePriority MEDIUM 40
- TI-2026-69290 Privilege escalation via Linux package upgrade in Splunk EnterprisePriority LOW 35
Timeline
- 2026-10-07 Threatist record created from CVE-2026-76284
- 2026-10-07 Alias added: GHSA-787c-75gx-5xvm
- 2026-10-10 CVSS score added · CISA ADP
- 2026-10-10 CISA SSVC decision points changed
- 2026-10-10 Priority changed: LOW → MEDIUM
References
More Splunk vulnerabilities
- TI-2026-16444 Unauthenticated Arbitrary File Creation and Truncation in a PostgreSQL Sidecar Service Endpoint in Splunk Enterprise KEVCVSS 3.1CRITICAL 9.8
- TI-2014-00154 The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly… KEVCVSS 3.1HIGH 7.5
- TI-2023-24841 Remote code execution (RCE) in Splunk Enterprise through Insecure XML Parsing CVSS 3.1HIGH 8.8
- TI-2023-15979 ‘edit_user’ Capability Privilege Escalation CVSS 3.1HIGH 8.8
- TI-2024-30707 Remote Code Execution (RCE) due to insecure session storage configuration in Splunk Enterprise on Windows CVSS 3.1HIGH 8.8
- TI-2022-21345 Reflected Cross-Site Scripting via the radio template in Splunk Enterprise CVSS 3.1HIGH 8.8
Sources
- CVE-2026-76284 · CVE Program
- CVE-2026-76284 · NVD
- FIRST EPSS
- GHSA-787c-75gx-5xvm · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences