CVE-2026-18806 Arbitrary Block Device Write via Missing Validation in TÜBİTAK BİLGEM's pardus-image-writer
Attackers can write to arbitrary block devices due to missing validation, potentially causing data loss or system denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18806?
CVE-2026-18806 is a high-severity path traversal vulnerability in TÜBİTAK BİLGEM Software Technologies Research Institute pardus-image-writer, published on 4 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
External control of file name or path vulnerability in TÜBİTAK BİLGEM Software Technologies Research Institute pardus-image-writer allows Removing Important Client Functionality.
This issue affects pardus-image-writer: before 0.9.0.
Weakness: CWE-73
Which versions are affected by CVE-2026-18806?
How do I fix CVE-2026-18806?
No fix has been published for CVE-2026-18806 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-18806 being exploited?
There is no known exploitation of CVE-2026-18806 in the wild and no public exploit code.
Sources
Also known as GHSA-55j4-vcvp-5mxf.