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CVE-2025-43849· NVD / CVE Program· CNA GitHub_M

GHSL-2025-019_Retrieval-based-Voice-Conversion-WebUI

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.

HighCVSS 8.9 · v4.0—No exploit No fix recorded

Noroxi analysis

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Published
May 5, 2025
Updated
Jun 17, 2026
EPSS
0.9% · 58th percentile
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Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.9%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
8.9
NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
rvc-projectretrieval-based-voice-conversion-webui

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • rvc-project retrieval-based-voice-conversion-webuiup to 2.2.231006 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • RVC-Project Retrieval-based-Voice-Conversion-WebUI

    • <= 2.2.231006affected

Same product

rvc-project: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-43844GHSL-2025-014_Retrieval-based-Voice-Conversion-WebUI
    36Monitor
  • CVE-2025-43843GHSL-2025-013_Retrieval-based-Voice-Conversion-WebUI
    36Monitor
  • CVE-2025-43842GHSL-2025-012_Retrieval-based-Voice-Conversion-WebUI
    36Monitor
  • CVE-2025-43852GHSL-2025-022_Retrieval-based-Voice-Conversion-WebUI
    35Monitor
  • CVE-2025-43851GHSL-2025-021_Retrieval-based-Voice-Conversion-WebUI
    35Monitor
  • CVE-2025-43850GHSL-2025-020_Retrieval-based-Voice-Conversion-WebUI
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-438460 days apartGHSL-2025-016_Retrieval-based-Voice-Conversion-WebUI
    35Monitor
  • CVE-2025-438470 days apartGHSL-2025-017_Retrieval-based-Voice-Conversion-WebUI
    35Monitor
  • CVE-2025-438480 days apartGHSL-2025-018_Retrieval-based-Voice-Conversion-WebUI
    35Monitor
  • CVE-2025-438500 days apartGHSL-2025-020_Retrieval-based-Voice-Conversion-WebUI
    35Monitor
  • CVE-2025-438510 days apartGHSL-2025-021_Retrieval-based-Voice-Conversion-WebUI
    35Monitor
  • CVE-2025-438520 days apartGHSL-2025-022_Retrieval-based-Voice-Conversion-WebUI
    35Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
X

Weakness class (CWE)

CWE-502 · Deserialization of Untrusted Data

CVSS vector

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/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

nvd-secondary

Root cause

Data received over the network is deserialized into the language’s native object format without verifying its source. Code paths inside the object can be triggered during deserialization.

The bug in code

The whole CWE-502 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

python
payload = sock.recv(65536)job = pickle.loads(payload)

Fixed

python
payload = sock.recv(65536)if not hmac.compare_digest(sign(payload), header_sig):    raise PermissionError("invalid signature")job = JobSchema.validate(json.loads(payload))

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records