CVE-2026-76259CWE-269privilege-escalation

CVE-2026-76259

High · published August 20, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
5.6
In the wild
Unconfirmed
What it is

In Splunk Enterprise for Windows versions below 10.4.2, 10.2.6, 10.0.9, 9.4.13, and 9.3.14, a local user with access to the Windows host could bind to the management port before Splunk Enterprise starts, intercept authentication tokens from child processes, and use those tokens to compromise all relevant data and system integrity available to the user account running Splunk Enterprise. The vulnerability is possible because the Windows management-port listener does not apply exclusive address binding protections before the service starts.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00167 · 5.6th percentile
Weakness
CWE-269 · Improper Privilege Management
Published
2026-08-20T02:17Z
Affected products (5)
ProductVersionsFixed in
splunk/splunk≥ 9.3.0, < 9.3.149.3.14
splunk/splunk≥ 9.4.0, < 9.4.139.4.13
splunk/splunk≥ 10.0.0, < 10.0.910.0.9
splunk/splunk≥ 10.2.0, < 10.2.610.2.6
splunk/splunk≥ 10.4.0, < 10.4.210.4.2
References (1)
EPSS history
Timeline
  • 19 AUG 21:34Z
    Improper Privilege Management on the Management Port in Splunk Enterprise for Windows
    cvelistv5