CVE-2025-20300Network attack vector

Alert suppression via incorrect read-only authorization

Published Jul 7, 2025 · Updated Jul 8, 2025

Improper access control in Splunk Enterprise and Splunk Cloud Platform allows remote authenticated users to suppress read-only alerts. The public advisory does not disclose the faulty endpoint or code path, only that alert suppression remains available despite read-only access. Exploitation requires a low-privileged account without the admin or power role, read-only access to the targeted alert, and Splunk Web to be enabled.

CVSS severity4.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Improper access control in Splunk Enterprise and Splunk Cloud Platform allows remote authenticated users to suppress read-only alerts. The public advisory does not disclose the faulty endpoint or code path, only that alert suppression remains available despite read-only access. Exploitation requires a low-privileged account without the admin or power role, read-only access to the targeted alert, and Splunk Web to be enabled.

The record

CVE
CVE-2025-20300
Published
Jul 7, 2025
Updated
Jul 8, 2025
Vendor
Splunk, Inc.
Product
Splunk Enterprise
Classifications
CWE-863, T1562.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=9.1 <9.1.9
  2. Affected versionversion=9.2 <9.2.6
  3. Affected versionversion=9.3 <9.3.5
  4. Affected versionversion=9.4 <9.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Splunk, Inc. · Splunk Enterpriseversion=9.1 <9.1.9; version=9.2 <9.2.6; version=9.3 <9.3.5; version=9.4 <9.4.2
Zoom Video Communications, Inc. · Splunk Cloud Platformversion=9.2.2406 <9.2.2406.119; version=9.3.2408 <9.3.2408.112; version=9.3.2411 <9.3.2411.103

Published CVSS scores

4.3SplunkCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1562.001Impair Defenses: Disable or Modify Tools

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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