CVE-2025-20387 json
Incorrect permissions assignment on Splunk Universal Forwarder for Windows during new installation or upgrade
published 2025-12-03 11 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-200997
- cvss
- 8.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 42%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Splunk Splunk Enterprise 9.2.10, 9.3.8, 9.4.6, 10.0.2
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 11 mo ago
Exploit prediction
0.50% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected products
- Splunk Splunk Enterprise
Classification
- Weakness
-
- CWE-732 Incorrect Permission Assignment for Critical Resource
References
-
advisory.splunk.com
/advisories/SVD-2025-1206
vendor-advisory
Sources
- CVE List CVE-2025-20387
- NVD CVE-2025-20387
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.