RVC-Project Retrieval-based-Voice-Conversion-WebUI up to 2.2.231006 process_ckpt.py merge ckpt_a/cpkt_b deserialization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability described as very critical has been identified in RVC-Project Retrieval-based-Voice-Conversion-WebUI up to 2.2.231006. Affected by this vulnerability is the function merge of the file process_ckpt.py. The manipulation of the argument ckpt_a/cpkt_b results in deserialization. This vulnerability is cataloged as CVE-2025-43849. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as very critical has been found in RVC-Project Retrieval-based-Voice-Conversion-WebUI up to 2.2.231006. Affected is the function merge of the file process_ckpt.py. The manipulation of the argument ckpt_a/cpkt_b with an unknown input leads to a deserialization vulnerability. CWE is classifying the issue as CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on 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 ckpt_a and cpkt_b variables take user input (e.g. a path to a model) and pass it to the merge function in process_ckpt.py, which uses them to load the models on those paths 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 available at securitylab.github.com. This vulnerability is traded as CVE-2025-43849 since 04/17/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (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 CVE reserved
05/05/2025 +18 days Advisory disclosed
05/05/2025 +0 days VulDB entry created
08/01/2025 +88 days VulDB entry last update

Sourcesinfo

Advisory: GHSL-2025-012
Status: Not defined

CVE: CVE-2025-43849 (🔒)
GCVE (CVE): GCVE-0-2025-43849
GCVE (VulDB): GCVE-100-307494

Entryinfo

Created: 05/05/2025 21:14
Updated: 08/01/2025 21:42
Changes: 05/05/2025 21:14 (69), 08/01/2025 21:42 (13)
Complete: 🔍
Cache ID: 216::103

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