TI-2023-21394 Aliases CVE-2023-40596 GHSA-mwr4-hjv7-wjrh

Splunk Enterprise on Windows Privilege Escalation due to Insecure OPENSSLDIR Build Definition Reference in DLL

LOW 39CWE-665Published 2023-08-30 · Updated 2025-02-28

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-427.

Summary

In Splunk Enterprise versions earlier than 8.2.12, 9.0.6, and 9.1.1, a dynamic link library (DLL) that ships with Splunk Enterprise references an insecure path for the OPENSSLDIR build definition. An attacker can abuse this reference and subsequently install malicious code to achieve privilege escalation on the Windows machine.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00166 5th percentileScored 2026-11-07

Fix Fixed Splunk Enterprise (Splunk): 8.2.12, 9.0.6, 9.1.1

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	8.2 to before 8.2.12; 9.0 to before 9.0.6; 9.1 to before 9.1.1	8.2.12, 9.0.6, 9.1.1	Patch available	CNA

Splunk Enterprise VendorSplunk Affected 8.2 to before 8.2.12; 9.0 to before 9.0.6; 9.1 to before 9.1.1 Fixed in 8.2.12, 9.0.6, 9.1.1 Patch available CNA

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:a:splunk:splunk:::::enterprise:::*	8.2.0 to before 8.2.12; 9.0.0 to before 9.0.6	Vulnerable	Splunk
cpe:2.3:a:splunk:splunk:9.1.0::::enterprise:::	9.1.0	Vulnerable	Splunk
cpe:2.3:o:microsoft:windows:-:::::::*	not specified by NVD	Running on	Microsoft

cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* Versions 8.2.0 to before 8.2.12; 9.0.0 to before 9.0.6 Vulnerable ·Splunk
cpe:2.3:a:splunk:splunk:9.1.0:*:*:*:enterprise:*:*:* Versions 9.1.0 Vulnerable ·Splunk
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

Fix · CNA Splunk Enterprise (Splunk) Fixed in 8.2.12, 9.0.6, 9.1.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2023-08-30
Splunk Enterprise 8.2.12, 9.0.6, 9.1.1
6 records Highest priority Priority MEDIUM 3 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2023-21396 Command Injection in Splunk Enterprise Using External LookupsPriority MEDIUM 42
- TI-2023-21395 Absolute Path Traversal in Splunk Enterprise Using runshellscript.pyPriority MEDIUM 40
- TI-2023-21393 Remote Code Execution via Serialized Session PayloadPriority MEDIUM 40
Show all 6 records →

Timeline

2026-10-02 Threatist record created from CVE-2023-40596
2026-10-03 Alias added: GHSA-mwr4-hjv7-wjrh

References

Advisory 1

https://advisory.splunk.com/advisories/SVD-2023-0805

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

See all 297 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences