What is CVE-2025-12674?

CVE-2025-12674 is a critical-severity vulnerability in Mykiot Kiotviet Sync, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2025-11-05.

How severe is CVE-2025-12674?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-12674 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Mykiot Kiotviet Sync

CVE-2025-12674

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.

Vulnerability class: Unrestricted File Upload

EPSS: 0.008 (51.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Mykiot Kiotviet Sync — versions 0

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

Nxploited/CVE-2025-12674

References

Frequently asked questions

What is CVE-2025-12674?: CVE-2025-12674 is a critical-severity vulnerability in Mykiot Kiotviet Sync, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2025-11-05.
How severe is CVE-2025-12674?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-12674 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.