RVC-Project Retrieval-based-Voice-Conversion-WebUI up to 2.2.231006 vr.py uvr model_choose deserialization

CVSS Meta Temp Score
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability classified as very critical was found in RVC-Project Retrieval-based-Voice-Conversion-WebUI up to 2.2.231006. This affects the function uvr of the file vr.py. Such manipulation of the argument model_choose leads to deserialization. This vulnerability is documented as CVE-2025-43851. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in RVC-Project Retrieval-based-Voice-Conversion-WebUI up to 2.2.231006. Affected by this issue is the function uvr of the file vr.py. The manipulation of the argument model_choose with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Retrieval-based-Voice-Conversion-WebUI is a voice changing framework based on VITS. Versions 2.2.231006 and prior are vulnerable to unsafe deserialization. The model_choose variable takes user input (e.g. a path to a model) and passes it to the uvr function in vr.py. In uvr , a new instance of AudioPre class is created with the model_path attribute containing the aformentioned user input. In the AudioPre class, the user input, is used to load the model on that path with torch.load, which can lead to unsafe deserialization and remote code execution. As of time of publication, no known patches exist.

The advisory is shared for download at securitylab.github.com. This vulnerability is handled as CVE-2025-43851 since 04/17/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/01/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/17/2025 🔍
05/05/2025 +18 days 🔍
05/05/2025 +0 days 🔍
08/01/2025 +88 days 🔍

Sourcesinfo

Advisory: GHSL-2025-012
Status: Not defined

CVE: CVE-2025-43851 (🔍)
GCVE (CVE): GCVE-0-2025-43851
GCVE (VulDB): GCVE-100-307496

Entryinfo

Created: 05/05/2025 21:15
Updated: 08/01/2025 21:42
Changes: 05/05/2025 21:15 (69), 08/01/2025 21:42 (13)
Complete: 🔍
Cache ID: 216::103

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