How severe is CVE-2025-40904?

CVE-2025-40904 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-40904 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-40904?

CVE-2025-40904 primarily affects Nozominetworks Cmc. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-40904?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-40904 have an EU (EUVD) identifier?

Yes. CVE-2025-40904 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209895.

When was CVE-2025-40904 published?

CVE-2025-40904 was published on 2026-05-19 and last updated on 2026-06-17.

CVE-2025-40904

CVE-2025-40904 is a medium-severity vulnerability in Nozominetworks Cmc with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 5.1
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-209895
Weakness: CWE-79
Affected product: Nozominetworks Cmc
Published: 2026-05-19
Last modified: 2026-06-17

Description

A Stored HTML Injection vulnerability was discovered in the Smart Polling functionality due to improper validation of an input parameter. An authenticated user with limited privileges can push malicious remote strategies containing HTML tags through the sync. When a victim views the affected remote strategy in the Smart Polling functionality, 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.

Frequently asked questions

What is CVE-2025-40904?: A Stored HTML Injection vulnerability was discovered in the Smart Polling functionality due to improper validation of an input parameter. An authenticated user with limited privileges can push malicious remote strategies containing HTML tags through the sync. When a victim views the affected remote strategy in the Smart Polling functionality, 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.
How severe is CVE-2025-40904?: CVE-2025-40904 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-40904 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-40904?: CVE-2025-40904 primarily affects Nozominetworks Cmc. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-40904?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-40904 have an EU (EUVD) identifier?: Yes. CVE-2025-40904 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209895.
When was CVE-2025-40904 published?: CVE-2025-40904 was published on 2026-05-19 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:nozominetworks:cmc:*:*:*:*:*:*:*:*
cpe:2.3:a:nozominetworks:guardian:*:*:*:*:*:*:*:*

More vulnerabilities in Nozominetworks Cmc

CVE-2025-40892 — High (CVSS 8.9): A Stored Cross-Site Scripting vulnerability was discovered in the Reports functionality due to improper validation of…
CVE-2023-2567 — High (CVSS 8.8): A SQL Injection vulnerability has been found in Nozomi Networks Guardian and CMC, due to improper input validation in…
CVE-2023-23574 — High (CVSS 8.8): A blind SQL Injection vulnerability in Nozomi Networks Guardian and CMC, due to improper input validation in the…
CVE-2023-22378 — High (CVSS 8.8): A blind SQL Injection vulnerability in Nozomi Networks Guardian and CMC, due to improper input validation in the…
CVE-2022-4259 — High (CVSS 8.8): Due to improper input validation in the Alerts controller, a SQL injection vulnerability in Nozomi Networks Guardian…
CVE-2025-40898 — High (CVSS 8.1): A path traversal vulnerability was discovered in the Import Arc data archive functionality due to insufficient…

All CVEs affecting Nozominetworks Cmc →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →