Deserialization in Rvc-Project Retrieval-Based-Voice-Conversion-Webui
CVE-2025-43849
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.
Vulnerability class: Insecure Deserialization
EPSS: 0.008 (53.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Rvc-project Retrieval-based-voice-conversion-webui — versions <= 2.2.231006
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Product, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-43849?
- CVE-2025-43849 is a critical-severity vulnerability in Rvc-Project Retrieval-Based-Voice-Conversion-Webui, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-05-05.
- How severe is CVE-2025-43849?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2025-43849 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.