CVE-2025-40890

Stored Cross-Site Scripting (XSS) in Dashboards in Guardian/CMC before 25.4.0

HIGH
7.9
CVSS Score
Published: November 25, 2025 at 03:30 PM UTC
Updated: October 18, 2026 at 08:10 PM UTC
2 products affected across 1 vendorGuardianCMC

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Severity
HIGH7.9
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

A Stored Cross-Site Scripting vulnerability was discovered in the Dashboards functionality due to improper validation of an input parameter. An authenticated low-privilege user can craft a malicious dashboard containing a JavaScript payload and share it with victim users, or a victim can be socially engineered to import a malicious dashboard template. When the victim views or imports the dashboard, the XSS executes in their browser context, allowing the attacker to perform unauthorized actions as the victim, such as modify application data, disrupt application availability, and access limited sensitive information.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0 ≤ v < 25.4.00
Affected range stops below 25.4.0, so it looks safe — our inference, not a vendor statement
0 ≤ v < 25.4.00
Affected range stops below 25.4.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.9HIGHNozomi
Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79

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