Vulnerability · CVE-2025-20386
In Splunk Enterprise 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 ass
Published Dec 3, 2025 · catalog updated Feb 26, 2026 · Splunk Splunk Enterprise
Last checked Oct 27, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-20386. EPSS is 0.49%. Act only if a listed version of Splunk Splunk Enterprise is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2026-76300 · Unknown
- CVE-2026-76301 · Critical
- CVE-2025-20388 · Low
- CVE-2025-20387 · High
- CVE-2025-20385 · Low
- Severity
- High8.0
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.49%
- Remediation
- Version ranges on file
- Affected products
- vendor Splunk Splunk Enterprise 9.3 <9.3.8
In Splunk Enterprise 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 Splunk Enterprise for Windows Installation directory. This lets non-administrator users on the machine access the directory and all its contents.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Splunk Splunk Enterprise 9.3 <9.3.89.3 <9.3.8
How to fix CVE-2025-20386
Upgrade
CVE-2025-20386 lists a fix boundary at 9.3.8. Compare the installed build with that boundary before you change production.
Version check
Seen in 9.3 <9.3.8
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-20386. EPSS is 0.49%. Act only if a listed version of Splunk Splunk Enterprise is installed.
Which versions are affected?
Compare what you have installed with Splunk Splunk Enterprise 9.3 <9.3.8 9.3 <9.3.8. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.49%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Technology hubs
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Dec 3, 2025 · EUVD
Detected
In Splunk Enterprise 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 Splunk Enterprise for Windows Installation directory. This lets non-administrator users on the machine access the directory and all its contents.
Feb 26, 2026 · EUVD
Updated
In Splunk Enterprise 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 Splunk Enterprise for Windows Installation directory. This lets non-administrator users on the machine access the directory and all its contents.
Sources
- CVE.orgVulnerability recordCVE-2025-20386
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-20386
30-day exploitation probability 0.49%
first.org - EUVDVulnerability recordEUVD-2025-201003
In Splunk Enterprise 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 Splunk Enterprise for Windows Installation directory. This lets non-administrator use
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Oct 27, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- CVE.orgOct 27, 2026
- FIRST EPSSOct 27, 2026
- EUVDOct 26, 2026