DLL search order hijack in Wave by Grandstream Networks
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-427.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Grandstream Networks | Wave | before 1.27.11 | 1.27.11 | Patch available | CNA |
- Wave VendorGrandstream Networks Affected before 1.27.11 Fixed in 1.27.11 Patch available CNA
Remediation
- Fix · CNA Wave (Grandstream Networks) Fixed in 1.27.11
Timeline
- 2026-10-02 Threatist record created from CVE-2025-40979
- 2026-10-03 Alias added: GHSA-x4gr-w8j3-47xm
References
More Grandstream Networks vulnerabilities
- TI-2026-62930 Grandstream GWN7660ELR < 1.0.27.6 Information Disclosure via SNMP Default Community String CVSS 4.0MEDIUM 6.9
Sources
- CVE-2025-40979 · CVE Program
- CVE-2025-40979 · NVD
- FIRST EPSS
- GHSA-x4gr-w8j3-47xm · GitHub Advisory Database · CC BY 4.0
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