LiveActive security incident?Get immediate response
CVE Record

CVE-2025-40892: Stored Cross-Site Scripting (XSS) in Reports in Guardian/CMC before 25.5.0

A Stored Cross-Site Scripting vulnerability was discovered in the Reports functionality due to improper validation of an input parameter. An authenticated user with report privileges can define a malicious report containing a JavaScript payload, or a victim can be socially engineered to import a malicious report template. When the victim views or imports the report, 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.

HighCVSS 8.9Not KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A logged-in attacker with report privileges, or someone who tricks a user into importing a malicious report, can make JavaScript run in the victim’s browser. This could let the attacker alter application data, disrupt availability, or access limited sensitive information using the victim’s permissions.

Executive priority

Prioritize remediation promptly because successful exploitation could modify operational data or disrupt application availability through a victim’s session. Focus first on pre-25.5.0 deployments with broadly assigned report privileges or frequent template imports. Validate exact applicability with Nozomi because the supplied version metadata is internally inconsistent.

Technical view

CVE-2025-40892 is stored cross-site scripting in Guardian and CMC report handling caused by insufficient input validation. A crafted report or imported template executes when viewed or imported. CVSS 3.1 rates it 8.9: network-accessible, low complexity, low privileges, user interaction required, with changed scope and potentially high integrity and availability impact.

Likely exposure

Potential exposure includes Guardian or CMC releases before 25.5.0 where users can create, import, or view reports. Authentication and report privileges constrain direct creation, but social engineering can target users who import templates. The bundle’s structured affected-version data is inconsistent with its title, so confirm exact releases against Nozomi’s advisory.

Exploitation context

The supplied evidence describes plausible authenticated and social-engineering attack paths but provides no evidence of active exploitation. This CVE is not listed as KEV in the bundle. Absence from KEV does not establish that exploitation has never occurred.

Researcher notes

The weakness is CWE-79 stored XSS with required victim interaction and browser-context execution. The stated vector is CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:H. The title identifies versions before 25.5.0, while the structured affected entries contain version “0” and defaultStatus “unaffected”; this discrepancy requires vendor confirmation.

Mitigation direction

  • Identify Guardian and CMC deployments and record their exact installed versions.
  • Review Nozomi’s advisory to confirm affected releases and vendor-approved remediation.
  • Prioritize moving pre-25.5.0 systems to a vendor-supported release identified by Nozomi.
  • Restrict report creation and import privileges until remediation is confirmed.
  • Treat externally sourced report templates as untrusted and limit their import.

Validation and detection

  • Verify each deployment’s product, version, and report functionality exposure.
  • Confirm remediation status against Nozomi advisory NN-2025:13-01.
  • Review privileged accounts authorized to create or import reports.
  • Inspect report and audit records for unexpected templates or unauthorized changes.
  • Confirm browser-facing report content is safely validated after remediation.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-79: User-session and phishing behavior lookup

Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2025-40892 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
8.9 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
3Timeline events
2ADP providers
3Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.9CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:H2.36Nozomi
7.1CVSS 4.0HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L——Nozomi

Vulnerability scoring details

Base CVSS 4.0 score

7.1High
CVSS 4.0 vector shape for CVE-2025-40892Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
siemens-SADPADP container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Nozomi NetworksGuardian0unaffected
Nozomi NetworksCMC0unaffected
Weakness

CWE details

CWE-79

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.