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CVE-2025-27779

Applio allows unsafe deserialization in model_blender.py

8.9 High

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

0.92%Up 0.6 points since Mar 20, 2025
90%50%10%1%

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 HighCVSS: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 HighCVSS: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 HighCVSS: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 CriticalCVSS: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 HighCVSS: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

History
RecordedChangedSources
first indexedCVE 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

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