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CVE-2025-20387: splunk

CVSS: 8.0v3.1HighAnalyzed
Published 03-12-2025Last modified 26-02-2026
Open JSON

Vulnerability summary

CVE-2025-20387 is a high (CVSS 8.0) vulnerability in splunk. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 41.1% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.0/10
010
High · v3.1 (CVE.org)
EPSS score
0.49%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 03-12-2025
    PublishedVulnerability first disclosed.
  2. 26-02-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.49%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

0.00 pp

From 0.49% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.49%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Splunk2 products
  • splunk≥ 9.2.0, < 9.2.10 | ≥ 9.3.0, < 9.3.8 | ≥ 9.4.0, < 9.4.6 | ≥ 10.0.0, < 10.0.2
  • splunk enterprise≥ 10.0, < 10.0.2 | ≥ 9.4, < 9.4.6 | ≥ 9.3, < 9.3.8 | ≥ 9.2, < 9.2.10

1 vendor · 2 products

References

1 links