Answer in brief
CVE-2025-40903 records a Unknown severity vulnerability in HTML injection in Schedule Restore Archive in Guardian/CMC before 26.1.0. The current sources do not mark it as known exploited. The current feed maps Nozomi Networks/CMC (generic), Nozomi Networks/Guardian (generic), Siemens/RUGGEDCOM APE1808 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Nozomi Networks/CMC (generic), Nozomi Networks/Guardian (generic), Siemens/RUGGEDCOM APE1808 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Nozomi Networks/CMCgeneric | >=0 <26.1.0 | 26.1.0 |
| Nozomi Networks/Guardiangeneric | >=0 <26.1.0 | 26.1.0 |
| Siemens/RUGGEDCOM APE1808generic | >=0 <* | * |
Published upstream
May 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 11, 2026
A Stored HTML Injection vulnerability was discovered in the Schedule Restore Archive functionality due to improper validation of an input parameter. An authenticated user with administrative privileges can define a malicious restore schedule containing HTML tags. When a victim views the affected schedule, the injected HTML renders in their browser, enabling phishing and possibly open redirect attacks. Full XSS exploitation and direct information disclosure are prevented by the existing input validation and Content Security Policy configuration.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-40903 records a Unknown severity vulnerability in HTML injection in Schedule Restore Archive in Guardian/CMC before 26.1.0. The current sources do not mark it as known exploited. The current feed maps Nozomi Networks/CMC (generic), Nozomi Networks/Guardian (generic), Siemens/RUGGEDCOM APE1808 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Nozomi Networks/CMC (generic), Nozomi Networks/Guardian (generic), Siemens/RUGGEDCOM APE1808 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Nozomi Networks/CMCgeneric | >=0 <26.1.0 | 26.1.0 |
| Nozomi Networks/Guardiangeneric | >=0 <26.1.0 | 26.1.0 |
| Siemens/RUGGEDCOM APE1808generic | >=0 <* | * |
Published upstream
May 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 11, 2026
A Stored HTML Injection vulnerability was discovered in the Schedule Restore Archive functionality due to improper validation of an input parameter. An authenticated user with administrative privileges can define a malicious restore schedule containing HTML tags. When a victim views the affected schedule, the injected HTML renders in their browser, enabling phishing and possibly open redirect attacks. Full XSS exploitation and direct information disclosure are prevented by the existing input validation and Content Security Policy configuration.
Quoted source text, attributed separately from HOL analysis.