CVE-2025-0364 BigAntSoft BigAnt Server Account Registration Bypass to File Upload RCE

Critical 9.8 Published 4 Feb 2025 Updated 14 May 2026

Unauthenticated attackers can register as admin via exposed SaaS mechanism and upload PHP code for remote code execution.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-0364?

CVE-2025-0364 is a critical authentication bypass vulnerability in BigAntSoft BigAnt Server, published on 4 Feb 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

BigAntSoft BigAnt Server, up to and including version 5.6.06, is vulnerable to unauthenticated remote code execution via account registration. An unauthenticated remote attacker can create an administrative user through the default exposed SaaS registration mechanism. Once an administrator, the attacker can upload and execute arbitrary PHP code using the "Cloud Storage Addin," leading to unauthenticated code execution.

Weakness: CWE-288

Which versions are affected by CVE-2025-0364?

It affects 1 product.

Products include Bigantsoft Bigant Server.

How do I fix CVE-2025-0364?

No fix has been published for CVE-2025-0364 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2025-0364 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-0364 exists.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-cmgj-xph9-cc49.