CVE-2025-53945 apko has incorrect permission (0666) in /etc/ld.so.cache and other files
Attackers can escalate privileges to root due to incorrect file permissions on critical system files in container images built by apko.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-53945?
CVE-2025-53945 is a high-severity vulnerability in chainguard-dev apko, published on 18 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
apko allows users to build and publish OCI container images built from apk packages. Starting in version 0.27.0 and prior to version 0.29.5, critical files were inadvertently set to 0666, which could likely be abused for root escalation. Version 0.29.5 contains a fix for the issue.
Weakness: CWE-276
Which versions are affected by CVE-2025-53945?
3 open source packages ship an affected version, including chainguard.dev/apko.
| Package | Affected | Fixed in |
|---|---|---|
chainguard.dev/apko Go | From 0.27.0 | 0.29.5 |
chainguard.dev/apko Go | From 0.27.0 | 0.29.5 |
chainguard.dev/apko Go | From 0.27.0 | 0.29.5 |
How do I fix CVE-2025-53945?
Upgrade chainguard.dev/apko to 0.29.5 or later.
Is CVE-2025-53945 being exploited?
There is no known exploitation of CVE-2025-53945 in the wild and no public exploit code.
Sources
Also known as GHSA-x6ph-r535-3vjw, GO-2025-3816.