Medium severity · published Dec 3, 2025
CVE-2025-20389
Improper Input Validation in "label" column field in Splunk Secure Gateway App
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
In Splunk Enterprise versions below 10.0.2, 9.4.6, 9.3.8, and 9.2.10, and versions below 3.9.10, 3.8.58 and 3.7.28 of the Splunk Secure Gateway app on Splunk Cloud Platform, a low-privileged user that does not hold the "admin" or "power" Splunk roles could craft a malicious payload through the `label` column field after adding a new device in the Splunk Secure Gateway app. This could potentially lead to a client-side denial of service (DoS).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SC
Splunk Cloud Platform · Splunk
10.1.2507 before 10.1.2507.6; 10.0.2503 before 10.0.2503.8; 9.3.2411 before 9.3.2411.120 · source: vendor, NVD
SE
Splunk Enterprise · Splunk
10.0 before 10.0.2; 9.4 before 9.4.6; 9.3 before 9.3.8; 9.2 before 9.2.10 · source: vendor
SS
Splunk Secure Gateway · Splunk
3.9 before 3.9.10; 3.8 before 3.8.58; 3.7 before 3.7.28 · source: vendor, NVD
SP
Splunk · Splunk
9.2.0 before 9.2.10; 9.3.0 before 9.3.8; 9.4.0 before 9.4.6; 10.0.0 before 10.0.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-20389
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-20389
Vendor Advisory
https://advisory.splunk.com/advisories/SVD-2025-1208
More from Splunk Cloud Platform
9.1
CVE-2022-32151
The httplib and urllib Python libraries that Splunk shipped with Splunk Enterprise did not validate certificates using the certificate authority (CA) certificate stores by default…
8.8
CVE-2026-20251
Remote Code Execution through Deserialization of Untrusted Data in Splunk Secure Gateway
8.8
CVE-2025-20371
Unauthenticated Blind Server Side Request Forgery (SSRF) in Splunk Enterprise
8.8
CVE-2024-36983
In Splunk Enterprise versions below 9.2.2, 9.1.5, and 9.0.10 and Splunk Cloud Platform versions below 9.1.2312.109 and 9.1.2308.207, an authenticated user could create an external…
8.8
CVE-2023-40598
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