CVE-2026-20259Network attack vector

Unauthorized ownership reassignment via unchecked endpoint

Published Jun 10, 2026 · Updated Jun 10, 2026

Improper access control in Splunk Enterprise and Splunk Cloud Platform allows remote authenticated users to reassign saved search ownership. The Splunk Web ownership-reassignment endpoint accepts a target owner outside the caller's authorized scope without enforcing access control. Exploitation requires a role containing the high-privilege edit_saved_search_owner capability and permits unauthorized control of saved searches.

CVSS severity5.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Splunk Enterprise and Splunk Cloud Platform allows remote authenticated users to reassign saved search ownership. The Splunk Web ownership-reassignment endpoint accepts a target owner outside the caller's authorized scope without enforcing access control. Exploitation requires a role containing the high-privilege edit_saved_search_owner capability and permits unauthorized control of saved searches.

The record

CVE
CVE-2026-20259
Published
Jun 10, 2026
Updated
Jun 10, 2026
Vendor
Zoom Video Communications, Inc.
Product
Splunk Enterprise
Classifications
CWE-284
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0 <10.0.7
  2. Affected versionversion=10.2 <10.2.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Zoom Video Communications, Inc. · Splunk Enterpriseversion=10.0 <10.0.7; version=10.2 <10.2.4
Zoom Video Communications, Inc. · Splunk Cloud Platformversion=10.0.2503 <10.0.2503.14; version=10.1.2507 <10.1.2507.23; version=10.2.2510 <10.2.2510.15; version=10.3.2512 <10.3.2512.12; version=9.3.2411 <9.3.2411.131

Published CVSS scores

5.5SplunkCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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