CVE-2025-20384

Name: CVE-2025-20384
Creator: NVD / NIST
Published: 2025-12-03T17:15:50.74+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.34%

Last modified Jun 17, 2026

CVE-2025-20384 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. In Splunk Enterprise versions below 10.0.1, 9.4.6, 9.3.8, and 9.2.10, and Splunk Cloud Platform versions below 10.1.2507.4, 10.0.2503.6, and 9.3.2411.117.125, an unauthenticated attacker can inject American National Standards Institute (ANSI) escape codes into Splunk log files due to improper validation at the /en-US/static/ web endpoint. This may allow them to poison, forge, or obfuscate sensitive log data through specially crafted HTTP requests, potentially impacting log integrity and detection capabilities.. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

Description

In Splunk Enterprise versions below 10.0.1, 9.4.6, 9.3.8, and 9.2.10, and Splunk Cloud Platform versions below 10.1.2507.4, 10.0.2503.6, and 9.3.2411.117.125, an unauthenticated attacker can inject American National Standards Institute (ANSI) escape codes into Splunk log files due to improper validation at the /en-US/static/ web endpoint. This may allow them to poison, forge, or obfuscate sensitive log data through specially crafted HTTP requests, potentially impacting log integrity and detection capabilities.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.34%

25.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-117

Affected Software

Vendor	Product	Versions
Splunk	Splunk	>= 9.2.0, < 9.2.10
Splunk	Splunk	>= 9.3.0, < 9.3.8
Splunk	Splunk	>= 9.4.0, < 9.4.6
Splunk	Splunk	10.0.0
Splunk	Splunk Cloud Platform	>= 9.3.2411, < 9.3.2411.117
Splunk	Splunk Cloud Platform	>= 10.0.2503, < 10.0.2503.6
Splunk	Splunk Cloud Platform	>= 10.1.2507, < 10.1.2507.4

References

https://advisory.splunk.com/advisories/SVD-2025-1203Vendor Advisory

Timeline

Published: Dec 3, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-20384?

How severe is CVE-2025-20384?

CVE-2025-20384 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.

How do I fix CVE-2025-20384?

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-2025-20384?

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

Scan your code now

Source: NVD / NIST