CVE-2025-3528 Mirror-registry: local privilege escalation due to incorrect permissions in mirror-registry
A malicious actor with container access can modify /etc/passwd to escalate privileges to root within the pod.
- 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-2025-3528?
CVE-2025-3528 is a high-severity vulnerability in Red Hat MIRROR-REGISTRY-2.0-RHEL-8, published on 9 May 2025. 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
A flaw was found in the Mirror Registry. The quay-app container shipped as part of the Mirror Registry for OpenShift has write access to the `/etc/passwd`. This flaw allows a malicious actor with access to the container to modify the passwd file and elevate their privileges to the root user within that pod.
Weakness: CWE-276
Which versions are affected by CVE-2025-3528?
How do I fix CVE-2025-3528?
No fix has been published for CVE-2025-3528 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-3528 being exploited?
There is no known exploitation of CVE-2025-3528 in the wild and no public exploit code.
Sources
Also known as GHSA-4mjc-w6xm-8xxc.