CVE-2023-40598

Name: CVE-2023-40598
Creator: NVD / NIST
Published: 2023-08-30T17:15:10.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.60%

Last modified Jun 17, 2026

CVE-2023-40598 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 0.60% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.60%

44.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Splunk	Splunk	< 8.2.12
Splunk	Splunk	>= 9.0.0, < 9.0.6
Splunk	Splunk	>= 9.1.0, < 9.1.1
Splunk	Splunk Cloud Platform	< 9.0.2305.200

References

https://advisory.splunk.com/advisories/SVD-2023-0807Vendor Advisory
https://research.splunk.com/application/ee69374a-d27e-4136-adac-956a96ff60fd/Vendor Advisory
https://advisory.splunk.com/advisories/SVD-2023-0807Vendor Advisory
https://research.splunk.com/application/ee69374a-d27e-4136-adac-956a96ff60fd/Vendor Advisory

Timeline

Published: Aug 30, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-40598?

How severe is CVE-2023-40598?

CVE-2023-40598 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.60% probability of exploitation in the next 30 days.

How do I fix CVE-2023-40598?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-40598?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST