CVE-2026-6265 Local Privilege Escalation in Cerberus FTP Server =< 2025.4.2

Q: What is CVE-2026-6265?

CVE-2026-6265 is a high-severity vulnerability in Cerberus FTP Server, published on 27 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Q: Is CVE-2026-6265 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6265 exists.

Q: How do I fix CVE-2026-6265?

No fix has been published for CVE-2026-6265 yet. Limit exposure of the affected software until one is available.

High 7.3 Published 27 Apr 2026 Updated 27 Apr 2026

Local attackers can escalate privileges on Windows systems running Cerberus FTP Server due to insecure inherited permissions.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-6265?

CVE-2026-6265 is a high-severity vulnerability in Cerberus FTP Server, published on 27 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Insecure preserved inherited permissions vulnerability in Cerberus FTP Server on Windows allows Privilege Escalation.This issue has been resolved in Cerberus FTP Server: 2026.1

Weakness: CWE-278

Which versions are affected by CVE-2026-6265?

It affects 1 product.

Products include Cerberusftp Ftp Server.

How do I fix CVE-2026-6265?

No fix has been published for CVE-2026-6265 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-6265 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6265 exists.

Sources

Also known as GHSA-55jc-jj35-fw6c.