High · CVSS 8.7CVE-2026-90777

ESPnet before 202609 Remote Code Execution via Unsafe DeserializationCVE-2026-90777

Answer in brief

CVE-2026-90777 records a High severity (CVSS 8.7) vulnerability in ESPnet before 202609 Remote Code Execution via Unsafe Deserialization. The current sources do not mark it as known exploited. The current feed maps espnet/espnet (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 13, 2026Updated Sep 24, 2026Source checked Oct 28, 2026First seen by HOL Sep 13, 2026Material review Sep 24, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.7
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps espnet/espnet (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
espnet/espnetgeneric	>=0 <202609	202609

Recommended response

Check inventory. Check lockfiles and deployed manifests for espnet/espnet.
Review the reported fix. Update espnet/espnet to 202609 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 13, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 13, 2026

Sources and claim methodology

Upstream source description

ESPnet before 202609 deserializes pretrained model checkpoints using torch.load with weights_only=False, allowing arbitrary code execution from attacker-supplied files. Attackers can craft malicious checkpoint files that execute code during deserialization when loaded through the initialization or fine-tuning path.

Quoted source text, attributed separately from HOL analysis.