CVE-2025-20387: high-severity vulnerability in Splunk Enterprise
Incorrect permissions assignment on Splunk Universal Forwarder for Windows during new installation or upgrade
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8epss 0.5%
In Splunk Universal Forwarder for Windows versions below 10.0.2, 9.4.6, 9.3.8, and 9.2.10, a new installation of or an upgrade to an affected version can result in incorrect permissions assignment in the Universal Forwarder for Windows Installation directory. This lets non-administrator users on the machine access the directory and all its contents.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Affected products
Splunk · Splunk EnterpriseRelated CVEs — Splunk Enterprise
In the same product, most dangerous first.
CVE-2026-20253CRITICALUnauthenticated Arbitrary File Creation and Truncation in a PostgreSQL Sidecar Service Endpoint in Splunk EnterpriseEPSS 96.9%KEVCVE-2023-46214HIGHRemote code execution (RCE) in Splunk Enterprise through Insecure XML ParsingEPSS 89.2%CVE-2023-32707HIGH‘edit_user’ Capability Privilege EscalationEPSS 78.7%CVE-2022-43568HIGHReflected Cross-Site Scripting via the radio template in Splunk EnterpriseEPSS 42.8%CVE-2025-20297MEDIUMReflected Cross-Site Scripting (XSS) on Splunk Enterprise through dashboard PDF generation componentEPSS 31.2%CVE-2026-20251HIGHRemote Code Execution through Deserialization of Untrusted Data in Splunk Secure GatewayEPSS 30.6%