What is the CVSS score of EUVD-2025-28281?

EUVD-2025-28281 has a CVSS 3.1 base score of 10.0 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of NasaTheme Flozen are affected by EUVD-2025-28281?

NasaTheme Flozen contains a critical unauthenticated file upload vulnerability (CVSS 10.0) enabling remote attackers to upload and execute malicious code without authentication, leading to complete…. A patch is available.

How to fix or mitigate EUVD-2025-28281?

Within 24 hours: identify all systems running NasaTheme Flozen and isolate them or disable external access. Within 7 days: apply the vendor-released patch to all affected instances and verify successful deployment. Within 30 days: conduct forensic review of access logs for indicators of exploitation and perform malware scans on compromised systems; implement network controls to restrict file upload endpoints.

NasaTheme Flozen EUVD-2025-28281

| CVE-2025-49071 CRITICAL

Unrestricted Upload of File with Dangerous Type (CWE-434)

2025-06-17 audit@patchstack.com

File Upload

10.0

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

10.0 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Re-analysis Queued

Apr 23, 2026 - 15:42 vuln.today

cvss_changed

Analysis Updated

Apr 16, 2026 - 05:54 EUVD-patch-fix

executive_summary

Re-analysis Queued

Apr 16, 2026 - 05:29 backfill_euvd_patch

patch_released

Patch available

Apr 16, 2026 - 05:29 EUVD

1.5.1

EUVD ID Assigned

Mar 14, 2026 - 22:15 euvd

EUVD-2025-28281

Analysis Generated

Mar 14, 2026 - 22:15 vuln.today

CVE Published

Jun 17, 2025 - 15:15 nvd

CRITICAL 10.0

DescriptionCVE.org

Unrestricted Upload of File with Dangerous Type vulnerability in NasaTheme Flozen allows Upload a Web Shell to a Web Server. This issue affects Flozen: from n/a through n/a.

AnalysisAI

Critical unrestricted file upload vulnerability in NasaTheme Flozen that allows unauthenticated remote attackers to upload and execute web shells on affected servers. This vulnerability affects all versions of Flozen and carries a CVSS score of 10.0 with no authentication or user interaction required. If actively exploited (KEV status pending verification), attackers can achieve complete system compromise including confidentiality breach, integrity violation, and availability disruption.

Technical ContextAI

This vulnerability exploits CWE-434 (Unrestricted Upload of File with Dangerous Type), a fundamental file upload validation flaw in the NasaTheme Flozen platform. The vulnerable component likely resides in the file upload handler that fails to properly validate file types, extensions, MIME types, or content before storing uploaded files in a web-accessible directory. The Flozen theme (likely a WordPress or similar CMS theme) lacks server-side validation to restrict dangerous file types (e.g., .php, .phtml, .jsp, .asp). An attacker can bypass client-side restrictions and upload executable code (web shell) to a location where the web server will interpret and execute it as code rather than serve it as static content. This is compounded by the global CVSS vector (S:C) indicating the impact extends beyond the vulnerable component to the entire system.

RemediationAI

Immediate Actions: (1) Contact NasaTheme for available security patches immediately; vendor advisory/patch URL pending from official sources. (2) If patches unavailable, implement emergency server-side mitigation: disable file upload functionality or restrict uploads to non-executable directories with explicit no-execute (.htaccess or nginx rules). (3) Implement strict file type validation on server-side: whitelist allowed extensions (.jpg, .png, .pdf only), validate MIME types, and scan uploaded content with antivirus/YARA rules. (4) Move upload directory outside web root or disable script execution in upload directory via .htaccess (AddType text/plain .php .phtml .jsp .asp) or nginx configuration (disable php-fpm for uploads directory). (5) Audit server logs and uploaded files for evidence of exploitation; remove any suspicious .php or executable files. (6) Implement Web Application Firewall (WAF) rules to block POST requests with suspicious payloads to upload endpoints. (7) Monitor Flozen GitHub repository and NasaTheme advisory channels for patch release; apply immediately upon availability.