CVE-2023-40598

Command Injection in Splunk Enterprise Using External Lookups

HIGH

8.8

CVSS Score

Published: August 30, 2023 at 04:19 PM UTC

Updated: June 17, 2026 at 06:18 AM UTC

2 products affected across 1 vendorSplunkSplunk Cloud Platform

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Severity

HIGH8.8

Exploit prediction

EPSS 0.9%

SSVC

No known exploit

Description

In Splunk Enterprise versions below 8.2.12, 9.0.6, and 9.1.1, an attacker can create an external lookup that calls a legacy internal function. The attacker can use this internal function to insert code into the Splunk platform installation directory. From there, a user can execute arbitrary code on the Splunk platform Instance.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Splunk · Splunk

95%

v < 8.2.12v < 9.0.2305.2008.2 ≤ v < 8.2.129.0 ≤ v < 9.0.69.0.0 ≤ v < 9.0.69.1 ≤ v < 9.1.19.1.0 ≤ v < 9.1.18.2 9.0 9.1

Affected range stops below 8.2.12, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.0.2305.200, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.0.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.1.1, so it looks safe — our inference, not a vendor statement

Splunk Cloud Platform · Splunk

95%

v < 9.0.2305.200

Affected range stops below 9.0.2305.200, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory

Source: [email protected]

https://advisory.splunk.com/advisories/SVD-2023-0807

Vendor Advisory

Source: [email protected]

https://research.splunk.com/application/ee69374a-d27e-4136-adac-956a96ff60fd/

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-77CWE-306

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