CVE-2025-40979 DLL search order hijack in Wave by Grandstream Networks
Local attackers can execute arbitrary code via DLL hijacking in Grandstream Wave on Windows 11 by placing malicious files in the temp directory.
- 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-2025-40979?
CVE-2025-40979 is a high-severity vulnerability in Grandstream Networks Wave, published on 10 Sep 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
DLL search order hijacking vulnerability in the wave.exe executable for Windows 11, version 1.27.8. Exploitation of this vulnerability could allow attackers with local access to execute arbitrary code by placing an arbitrary file in the 'C:\Users<user>\AppData\Local\Temp' directory, which could lead to arbitrary code execution and persistence. This vulnerability is only replicable in versions of Windows 11 and does not affect earlier versions.
Weakness: CWE-427
Which versions are affected by CVE-2025-40979?
How do I fix CVE-2025-40979?
No fix has been published for CVE-2025-40979 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-40979 being exploited?
There is no known exploitation of CVE-2025-40979 in the wild and no public exploit code.
Sources
Also known as GHSA-x4gr-w8j3-47xm.