CVE-2025-6217 PEAK-System Driver PCANFD_ADD_FILTERS Time-Of-Check Time-Of-Use Information Disclosure Vulnerability
Local attackers can exploit a race condition in the PCANFD_ADD_FILTERS IOCTL to disclose sensitive information and potentially execute kernel code.
- 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-2025-6217?
CVE-2025-6217 is a low-severity vulnerability in PEAK-System Driver, published on 21 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
PEAK-System Driver PCANFD_ADD_FILTERS Time-Of-Check Time-Of-Use Information Disclosure Vulnerability. This vulnerability allows local attackers to disclose sensitive information on affected installations of PEAK-System Driver. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the handling of the PCANFD_ADD_FILTERS IOCTL. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel. Was ZDI-CAN-24161.
Weakness: CWE-367
Which versions are affected by CVE-2025-6217?
It affects 1 product.
Products include Peak-System Device Driver.
How do I fix CVE-2025-6217?
No fix has been published for CVE-2025-6217 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-6217 being exploited?
There is no known exploitation of CVE-2025-6217 in the wild and no public exploit code.
Sources
Also known as GHSA-cfhg-h373-g4mj.