CVE-2025-43846Network attack vector

Unauthenticated code execution via unsafe checkpoint loading

Published May 5, 2025 · Updated May 5, 2025

Unsafe deserialization in RVC-Project Retrieval-based-Voice-Conversion-WebUI 2.2.231006 and earlier allows remote attackers to execute code. The ckpt_path1 input reaches show_info in process_ckpt.py, which passes the selected checkpoint to torch.load without restricting untrusted pickle content. Reachability requires the supplied path to resolve to a malicious checkpoint readable by the server; deserialization then runs code in the WebUI process.

CVSS severity9.8
Critical
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe deserialization in RVC-Project Retrieval-based-Voice-Conversion-WebUI 2.2.231006 and earlier allows remote attackers to execute code. The ckpt_path1 input reaches show_info in process_ckpt.py, which passes the selected checkpoint to torch.load without restricting untrusted pickle content. Reachability requires the supplied path to resolve to a malicious checkpoint readable by the server; deserialization then runs code in the WebUI process.

The record

CVE
CVE-2025-43846
Published
May 5, 2025
Updated
May 5, 2025
Vendor
RVC-Project
Product
Retrieval-based-Voice-Conversion-WebUI
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 5, 2025CVE publishedPublication date reported by the CVE source.
  2. May 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 2.2.231006

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

RVC-Project · Retrieval-based-Voice-Conversion-WebUIversion=<= 2.2.231006

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.9GitHub, Inc.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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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