What is the CVSS score of CVE-2025-12673?

CVE-2025-12673 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Which versions of WordPress are affected by CVE-2025-12673?

A critical vulnerability in the Flex QR Code Generator WordPress plugin allows unauthenticated attackers to upload malicious files and potentially execute arbitrary code on affected servers.

How to fix or mitigate CVE-2025-12673?

Within 24 hours: Inventory all WordPress installations using Flex QR Code Generator plugin and identify versions; disable the plugin immediately on all affected sites as a temporary measure. Within 7 days: Implement Web Application Firewall (WAF) rules to block file upload requests to the vulnerable endpoint (/update_qr_code function); monitor access logs for suspicious upload attempts; consider removing the plugin entirely if functionality is not critical. Within 30 days: Monitor vendor for patch release; maintain compensating controls until official patch is available; conduct security assessment of affected sites for evidence of prior exploitation.

WordPress CVE-2025-12673

EUVD-2025-201530 CRITICAL

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

2025-12-06 security@wordfence.com

WordPress RCE File Upload

9.8

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

EUVD ID Assigned

Mar 15, 2026 - 17:37 euvd

EUVD-2025-201530

CVE Published

Dec 06, 2025 - 06:15 nvd

CRITICAL 9.8

DescriptionNVD

The Flex QR Code Generator plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the update_qr_code() function in all versions up to, and including, 1.2.6. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

Analysis

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CVE-2025-12673 vulnerability details – vuln.today

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WordPress CVE-2025-12673

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

Analysis

More from same product – last 7 days

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External POC / Exploit Code