CVE-2025-43849

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.8%, top 48% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
51.6%
KEV
Not listed

Published

May 5, 2025

Last Modified

August 1, 2025

Advisory Details (5)

Auto-updated Jun 13, 2026
🔬 Proof of concept available. No patch confirmed yet. Sources: github.
github🟡 PoC Available

GHSL-2025-012_GHSL-2025-022: Multiple vulnerabilities in Retrieval-based-Voice-Conversion-WebUI - CVE-2025-43842_CVE-2025-43852 | GitHub Security Lab

https://securitylab.github.com/advisories/GHSL-2025-012_GHSL-2025-022_Retrieval-based-Voice-Conversion-WebUI/
generic

Retrieval-based-Voice-Conversion-WebUI/infer-web.py at 9f2f0559e6932c10c48642d404e7d2e771d9db43 · RVC-Project/Retrieval-based-Voice-Conversion-WebUI · GitHub

https://github.com/RVC-Project/Retrieval-based-Voice-Conversion-WebUI/blob/9f2f0559e6932c10c48642d404e7d2e771d9db43/infer-web.py#L1398
generic

Retrieval-based-Voice-Conversion-WebUI/infer-web.py at 9f2f0559e6932c10c48642d404e7d2e771d9db43 · RVC-Project/Retrieval-based-Voice-Conversion-WebUI · GitHub

https://github.com/RVC-Project/Retrieval-based-Voice-Conversion-WebUI/blob/9f2f0559e6932c10c48642d404e7d2e771d9db43/infer-web.py#L1358
generic

Retrieval-based-Voice-Conversion-WebUI/infer-web.py at 9f2f0559e6932c10c48642d404e7d2e771d9db43 · RVC-Project/Retrieval-based-Voice-Conversion-WebUI · GitHub

https://github.com/RVC-Project/Retrieval-based-Voice-Conversion-WebUI/blob/9f2f0559e6932c10c48642d404e7d2e771d9db43/infer-web.py#L1357
generic

Retrieval-based-Voice-Conversion-WebUI/infer/lib/train/process_ckpt.py at 7ef19867780cf703841ebafb565a4e47d1ea86ff · RVC-Project/Retrieval-based-Voice-Conversion-WebUI · GitHub

https://github.com/RVC-Project/Retrieval-based-Voice-Conversion-WebUI/blob/7ef19867780cf703841ebafb565a4e47d1ea86ff/infer/lib/train/process_ckpt.py#L196

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 14× in last 7d / 49× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-25 14:17 UTCEPSS rescore
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  4. 2026-07-24 07:11 UTCOSV refresh
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  6. 2026-07-23 02:56 UTCEG score recompute
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  1. 2026-07-11 08:27 UTCEPSS rescore
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  7. 2026-07-07 02:51 UTCOSV refresh
  8. 2026-07-06 16:27 UTCEPSS rescore
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  71. 2026-05-30 06:08 UTCEG score recompute
  72. 2026-05-29 22:50 UTCOSV refresh
  73. 2026-05-29 13:44 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-43849?
CVE-2025-43849 is a critical vulnerability published on May 5, 2025. 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 ckpta and cpktb 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…
When was CVE-2025-43849 disclosed?
CVE-2025-43849 was first published in the National Vulnerability Database on May 5, 2025, with the most recent update on August 1, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-43849 actively exploited?
CVE-2025-43849 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 51.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-43849?
CVE-2025-43849 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2025-43849?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-43849, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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