Improper neutralization flaws in Splunk Enterprise hardening release
Key facts
- Attack vector
- Network
- Privileges required
- Low
- 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
Splunk Enterprise from 10.4 before 10.4.4, from 10.2 before 10.2.8, from 10.0 before 10.0.11 and from 9.4 before 9.4.16 is affected. Cisco's internal security review found multiple flaws, grouped under CWE-707 (improper neutralization). An attacker with low privileges over the network can fully impact confidentiality, integrity and availability, and the impact can reach beyond the vulnerable component.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
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-2026-76302 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
- No
- 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 10.4.4; 10.2 to before 10.2.8; 10.0 to before 10.0.11; 9.4 to before 9.4.16 | 10.4.4, 10.2.8, 10.0.11, 9.4.16 | Patch available | CNA |
- Splunk Enterprise VendorSplunk Affected 10.4 to before 10.4.4; 10.2 to before 10.2.8; 10.0 to before 10.0.11; 9.4 to before 9.4.16 Fixed in 10.4.4, 10.2.8, 10.0.11, 9.4.16 Patch available CNA
Remediation
Upgrade Splunk Enterprise to 10.4.4 for the 10.4 line, 10.2.8 for 10.2, 10.0.11 for 10.0 or 9.4.16 for 9.4.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA Splunk Enterprise (Splunk) Fixed in 10.4.4, 10.2.8, 10.0.11, 9.4.16
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Splunk Enterprise 10.0.11, 10.2.8 and 2 more versions
12 records Highest priority Priority MEDIUM 5 MEDIUM, 7 LOW
Other records, highest priority first
- TI-2026-79027 Protection mechanism failure in Splunk EnterprisePriority MEDIUM 49
- TI-2026-79025 Improper access control in Splunk EnterprisePriority MEDIUM 43
- TI-2026-79026 Improper resource lifetime control in Splunk EnterprisePriority MEDIUM 40
Timeline
- 2026-10-21 Threatist record created from CVE-2026-76302
- 2026-10-22 Alias added: GHSA-h7wc-qpph-925x
- 2026-10-22 CVSS score added · CISA ADP
- 2026-10-22 CISA SSVC decision points changed
- 2026-10-22 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-2023-12257 Injection in https://github.com/curl/curl CVSS 3.1CRITICAL 9.8
- TI-2022-13930 Information disclosure in https://github.com/curl/curl CVSS 3.1CRITICAL 9.8
- TI-2022-13917 Incorrect default permissions in https://github.com/curl/curl CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-76302 · CVE Program
- CVE-2026-76302 · NVD
- FIRST EPSS
- GHSA-h7wc-qpph-925x · GitHub Advisory Database · CC BY 4.0
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