1. Home
  2. Vulnerabilities
  3. CVE-2025-20384
5.3
MEDIUM CVSS 3.1
CVE-2025-20384
Unauthenticated Log Injection in Splunk Enterprise
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.

INFO

Published Date :

Dec. 3, 2025, 5:15 p.m.

Last Modified :

Dec. 5, 2025, 6:14 p.m.

Remotely Exploit :

No

Source :

[email protected]
Affected Products

The following products are affected by CVE-2025-20384 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Splunk splunk
2 Splunk splunk_cloud_platform
: Total Affected Vendor : 1 | Products : 2
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM d1c1063e-7a18-46af-9102-31f8928bc633
CVSS 3.1 MEDIUM [email protected]
Solution
Update Splunk to the latest version to fix log injection vulnerability.
  • Update Splunk Enterprise to a patched version.
  • Update Splunk Cloud Platform to a patched version.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-20384.

URL Resource
https://advisory.splunk.com/advisories/SVD-2025-1203 Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-20384 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-20384 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-20384 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-20384 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Dec. 05, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:splunk:splunk:10.0.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* versions from (including) 9.2.0 up to (excluding) 9.2.10 *cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* versions from (including) 9.3.0 up to (excluding) 9.3.8 *cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* versions from (including) 9.4.0 up to (excluding) 9.4.6 *cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:* versions from (including) 10.0.2503 up to (excluding) 10.0.2503.6 *cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:* versions from (including) 10.1.2507 up to (excluding) 10.1.2507.4 *cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:* versions from (including) 9.3.2411 up to (excluding) 9.3.2411.117
    Added Reference Type Cisco Systems, Inc.: https://advisory.splunk.com/advisories/SVD-2025-1203 Types: Vendor Advisory
  • New CVE Received by [email protected]

    Dec. 03, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
    Added CWE CWE-117
    Added Reference https://advisory.splunk.com/advisories/SVD-2025-1203
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.3
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact