CVE-2025-20387— Incorrect permissions assignment on Splunk Universal Forwarder for Windows during new installation or upgrade
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I. Basic Information for CVE-2025-20387
Vulnerability Information
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Vulnerability Title
Incorrect permissions assignment on Splunk Universal Forwarder for Windows during new installation or upgrade
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
关键资源的不正确权限授予
Source: NVD (National Vulnerability Database)
Vulnerability Title
Splunk Universal Forwarder 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Splunk Universal Forwarder是Splunk公司的一个Splunk组件。 Splunk Universal Forwarder 10.0.2之前版本、9.4.6版本、9.3.8版本和9.2.10版本存在安全漏洞，该漏洞源于安装或升级时权限分配不当，可能导致非管理员用户访问安装目录及其内容。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Splunk | Splunk Enterprise | 10.0 ~ 10.0.2 | - |
II. Public POCs for CVE-2025-20387
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|---|
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Same Patch Batch · Splunk · 2025-12-03 · 9 CVEs total
| CVE-2025-20386 | 8.0 HIGH | Incorrect permission assignment on Splunk Enterprise for Windows during new installation o |
| CVE-2025-20381 | 5.4 MEDIUM | SPL commands allowlist controls bypass in Splunk MCP Server app through "run_splunk_query" |
| CVE-2025-20384 | 5.3 MEDIUM | Unauthenticated Log Injection in Splunk Enterprise |
| CVE-2025-20389 | 4.3 MEDIUM | Improper Input Validation in "label" column field in Splunk Secure Gateway App |
| CVE-2025-20383 | 4.3 MEDIUM | Improper access control through push notifications for reports and alerts in Splunk Secure |
| CVE-2025-20382 | 3.5 LOW | URL validation bypass through Views Dashboard in Splunk Enterprise |
| CVE-2025-20388 | 2.7 LOW | Blind Server Side Request Forgery (SSRF) through Distributed Search Peers in Splunk Enterp |
| CVE-2025-20385 | 2.4 LOW | Stored Cross-Site scripting (XSS) through Anchor Tag "href" in Navigation Bar Collections |
IV. Related Vulnerabilities
Same product: Splunk Enterprise
- CVE-2026-20203
Improper Access Control in Data Model Acceleration in Splunk - CVE-2026-20204
Improper Handling and Insufficient Isolation of Specific Tem - CVE-2026-20202
Improper Input Validation during User Account Creation in Sp - CVE-2026-20163
Remote Command Execution (RCE) through the '/splunkd/__uploa - CVE-2026-20162
Stored Cross-Site Scripting (XSS) through Path Traversal in
Same vendor: Splunk
- CVE-2026-20205
Sensitive Information Disclosure in ''_internal'' index in S - CVE-2026-20203
Improper Access Control in Data Model Acceleration in Splunk - CVE-2026-20204
Improper Handling and Insufficient Isolation of Specific Tem - CVE-2026-20202
Improper Input Validation during User Account Creation in Sp - CVE-2026-20163
Remote Command Execution (RCE) through the '/splunkd/__uploa
Same weakness: CWE-732
- CVE-2026-41288
WatchGuard Agent on Windows Privilege Escalation Vulnerabili - CVE-2026-41686
Claude SDK for TypeScript has Insecure Default File Permissi - CVE-2026-6499
ILM Informatique OpenConcerto 安全漏洞 - CVE-2026-41366
OpenClaw < 2026.3.31 - Arbitrary Host File Read via appendLo - CVE-2026-35367
uutils coreutils nohup Information Disclosure via Insecure D
V. Comments for CVE-2025-20387
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