CVE-2025-20300 | Improper Access Control Lets Low-Privilege Users Suppress Read-Only Alerts in Splunk Enterprise

In Splunk Enterprise versions below 9.4.2, 9.3.5, 9.2.6, and 9.1.9 and Splunk Cloud Platform versions below 9.3.2411.103, 9.3.2408.112, and 9.2.2406.119, a low-privileged user that does not hold the "admin" or "power" Splunk roles, and has read-only access to a specific alert, could suppress that alert when it triggers. See [Define alert suppression groups to throttle sets of similar alerts](https://help.splunk.com/en/splunk-enterprise/alert-and-respond/alerting-manual/9.4/manage-alert-trigger-conditions-and-throttling/define-alert-suppression-groups-to-throttle-sets-of-similar-alerts).

Published: 2025-07-07 Last update: 2025-07-21 Assigner: [email protected] Source: [email protected]

NVD Status：Analyzed，CVE State: published

View at NVD, CVE.org, EUVD

Conclusion & alert: CVE-2025-20300 is rated Low Risk (30.9/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.18%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-20300

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-05-03	0.06%	0.18%	+0.12%
2	2026-03-23	0.03%	0.06%	+0.02%
3	2025-12-03	—	0.03%	—

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-20300

CVSS metrics for this CVE.

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
4.3	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:N) Service keeps running; no real outage angle.	2.8	1.4	[email protected]

Weakness enumeration for CVE-2025-20300

CWE-863 MITRE ↗

Affected software / configurations for CVE-2025-20300

Vendor	Product	Version	Raw CPE
splunk	splunk	>= 9.1.0, < 9.1.9	cpe:2.3:a:splunk:splunk:::::enterprise:::*
splunk	splunk	>= 9.2.0, < 9.2.6	cpe:2.3:a:splunk:splunk:::::enterprise:::*
splunk	splunk	>= 9.3.0, < 9.3.5	cpe:2.3:a:splunk:splunk:::::enterprise:::*
splunk	splunk	>= 9.4.0, < 9.4.2	cpe:2.3:a:splunk:splunk:::::enterprise:::*
splunk	splunk_cloud_platform	>= 9.2.2406, < 9.2.2406.118	cpe:2.3:a:splunk:splunk_cloud_platform::::::::
splunk	splunk_cloud_platform	>= 9.3.2408, < 9.3.2408.112	cpe:2.3:a:splunk:splunk_cloud_platform::::::::
splunk	splunk_cloud_platform	>= 9.3.2411, < 9.3.2411.103	cpe:2.3:a:splunk:splunk_cloud_platform::::::::

References for CVE-2025-20300

URL	Tags
https://advisory.splunk.com/advisories/SVD-2025-0708	Vendor Advisory

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