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CVE-2025-12674

CriticalPublished

KiotViet Sync <= 1.8.5 - Unauthenticated Arbitrary File Upload

Published: Nov 5, 2025
Updated: Apr 8, 2026
Assigning CNA: Wordfence
Evidence observed: Aug 15, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

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

EPSS probability estimate

0.8%

Low · next 30 days

Percentile: 54.0%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

The KiotViet Sync plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the create_media() function in all versions up to, and including, 1.8.5. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

Sources

CVE-2025-12674Exploit
KiotViet Sync <= 1.8.5 - Unauthenticated Arbitrary File Upload

Responsible use

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