CVE-2025-51504

HighPublic PoC

Published: 01 August 2025

Published

01 August 2025

Modified

19 August 2025

KEV Added

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Patch

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CVSS Score v3.1 7.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

EPSS Score 0.0034 57.0th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-51504 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Microweber Microweber. Its CVSS base score is 7.6 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Drive-by Compromise (T1189); ranked in the top 43.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2025-23365

Vulnerability details

Microweber CMS 2.0 is vulnerable to Cross Site Scripting (XSS)in the /projects/profile, homepage endpoint via the last name field.

CWE(s): CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1189 Drive-by Compromise Initial Access

Adversaries may gain access to a system through a user visiting a website over the normal course of browsing.

attack.mitre.org →

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1203 Exploitation for Client Execution Execution

Adversaries may exploit software vulnerabilities in client applications to execute code.

attack.mitre.org →

Why these techniques?

XSS vulnerability in public-facing Microweber CMS enables drive-by compromise via malicious script injection, exploitation of public-facing web applications, and client-side execution through injected JavaScript.