Vulnerability · Published Sep 13, 2026 · Assigned by VulnCheck
CVE-2026-90777ESPnet before 202609 Remote Code Execution via Unsafe Deserialization
High 8.8
In plain English
A high-severity unsafe deserialization in espnet from espnet. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.7%top 45.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- GitHub Security Advisory (GHSA-64f6-3gqc-r926) vendor-advisory
- Patch Commit patch
- Unsafe torch.load call at v.202511 technical-description
- ESPnet v.202609 Release Notes release-notes
- https://github.com/espnet/espnet product
- VulnCheck Advisory: ESPnet before 202609 Remote Code Execution via Unsafe Deserialization third-party-advisory