CVE-2025-27779
Applio allows unsafe deserialization in model_blender.py
Applio is a voice conversion tool. Versions 3.2.8-bugfix and prior are vulnerable to unsafe deserialization in model_blender.py lines 20 and 21. model_fusion_a and model_fusion_b from voice_blender.py take user-supplied input (e.g. a path to a model) and pass that value to the run_model_blender_script and later to model_blender function, which loads these two models with torch.load in model_blender.py (on lines 20-21 in 3.2.8-bugfix), which is vulnerable to unsafe deserialization. The issue can lead to remote code execution. A patch is available on the main` branch of the Applio repository.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
8.9
Applio allows unsafe deserialization in model_blender.py
Applio is a voice conversion tool. Versions 3.2.8-bugfix and prior are vulnerable to unsafe deserialization in model_blender.py lines 20 and 21. model_fusion_a and model_fusion_b from voice_blender.py take user-supplied input (e.g. a path to a model) and pass that value to the run_model_blender_script and later to model_blender function, which loads these two models with torch.load in model_blender.py (on lines 20-21 in 3.2.8-bugfix), which is vulnerable to unsafe deserialization. The issue can lead to remote code execution. A patch is available on the main` branch of the Applio repository.
- Record
CVE-2025-27779- CVSS 4.0
- 8.9 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P - Weakness
- CWE-502
- Updated
- 2026-11-02
EUVDEUVD-2025-6791
8.9
Applio is a voice conversion tool. Versions 3.2.8-bugfix and prior are vulnerable to unsafe deserialization in model_blender.py lines 20 and 21. model_fusion_a and model_fusion_b from voice_blender.py take user-supplied input (e.g. a path to a model) and pass that value to the run_model_blender_script and later to model_blender function, which loads these two models with torch.load in model_blender.py (on lines 20-21 in 3.2.8-bugfix), which is vulnerable to unsafe deserialization. The issue can lead to remote code execution. A patch is available on the main` branch of the Applio repository.
- Record
EUVD-2025-6791- CVSS 4.0
- 8.9 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P - Updated
- 2026-11-02
NVD
8.9
Applio is a voice conversion tool. Versions 3.2.8-bugfix and prior are vulnerable to unsafe deserialization in model_blender.py lines 20 and 21. model_fusion_a and model_fusion_b from voice_blender.py take user-supplied input (e.g. a path to a model) and pass that value to the run_model_blender_script and later to model_blender function, which loads these two models with torch.load in model_blender.py (on lines 20-21 in 3.2.8-bugfix), which is vulnerable to unsafe deserialization. The issue can lead to remote code execution. A patch is available on the main` branch of the Applio repository.
- Record
CVE-2025-27779- CVSS 4.0
- 8.9 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
OSV
8.9
Applio allows unsafe deserialization in model_blender.py
Applio is a voice conversion tool. Versions 3.2.8-bugfix and prior are vulnerable to unsafe deserialization in model_blender.py lines 20 and 21. model_fusion_a and model_fusion_b from voice_blender.py take user-supplied input (e.g. a path to a model) and pass that value to the run_model_blender_script and later to model_blender function, which loads these two models with torch.load in model_blender.py (on lines 20-21 in 3.2.8-bugfix), which is vulnerable to unsafe deserialization. The issue can lead to remote code execution. A patch is available on the main` branch of the Applio repository.
- Record
CVE-2025-27779- CVSS 4.0
- 8.9 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P - Weakness
- CWE-502
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-27779 is a high vulnerability (CVSS 8.9) in Applio, published March 19, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.92%, the 60th percentile. No source names a fixed version.
References
securitylab.github.com/advisories/GHSL-2024-341_GHSL-2024-353_Applio
github.com/IAHispano/Applio/commit/11d139508d615a6db4d48b76634a443c66170dda
github.com/IAHispano/Applio/blob/29b4a00e4be209f9aac51cd9ccffcc632dfb2973/rvc/train/process/model_blender.py
github.com/IAHispano/Applio/blob/29b4a00e4be209f9aac51cd9ccffcc632dfb2973/tabs/voice_blender/voice_blender.py
github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27779.json
nvd.nist.gov/vuln/detail/CVE-2025-27779